debian-user

annoying beep in console

2012-01-28T21:17:00.000-08:00

create a file
.inputrc
set bell-style visible

and can use xset b 0
as well
------------------
.emacs file

and how to shut off in emacs?
this will make it visible

(setq visible-bell 1)
;; Now some people find the flashing annoying. To turn the alarm totally off, you can use this:
(setq ring-bell-function 'ignore)

trouble with texlive-base in sid upgrade

2011-11-24T08:20:00.000-08:00

apt-get upgrade or dist-upgrade

I had persistent problems

errors were encountered while processing:
texlive-base
texlive-latex-base
feynmf
texlive-latex-recommended
texlive-fonts-recommended
pdfjam
texlive
texlive-generic-recommended
texlive-luatex
texlive-metapost
texlive-pictures
texmacs

ie the following

Reading database ... 642501 files and directories currently installed.)
Preparing to replace texlive-latex-base 2009-14 (using .../texlive-latex-base_2009-15_all.deb) ...
Unpacking replacement texlive-latex-base ...
Processing triggers for man-db ...
Setting up texlive-base (2009-15) ...
mktexlsr: Updating /var/lib/texmf/ls-R-TEXLIVE...
mktexlsr: Updating /var/lib/texmf/ls-R-TEXMFMAIN...
mktexlsr: Updating /var/lib/texmf/ls-R...
mktexlsr: Done.
Running mktexlsr. This may take some time... done.
Building format(s) --all --cnffile /etc/texmf/fmt.d/10texlive-base.cnf.
This may take some time...
fmtutil-sys failed. Output has been stored in
/tmp/fmtutil.QRFBRZLF
Please include this file if you report a bug.

dpkg: error processing texlive-base (--configure):
subprocess installed post-installation script returned error exit status 1
configured to not write apport reports
dpkg: dependency problems prevent configuration of texlive-latex-base:
texlive-latex-base depends on texlive-base (>= 2009-1); however:
Package texlive-base is not configured yet.
dpkg: error processing texlive-latex-base (--configure):
dependency problems - leaving unconfigured
configured to not write apport reports
dpkg: dependency problems prevent confi

---------------
so what i did was read the bug report

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648278
i tried this so let us see what happens with the next attempt to upgrade
Rashi:/home/mlaks# mktexlsr /usr/share/texmf
mktexlsr: Updating /var/lib/texmf/ls-R-TEXMFMAIN...
mktexlsr: Done.
Rashi:/home/mlaks#

This did not help:

then see the remark there about installing all the texlive-base dependencies
at the same time

-----------------
Holger Levsen wrote:

> during a test with piuparts I noticed your package failed to install. As per
> definition of the release team this makes the package too buggy for a
> release, thus the severity.

Thank you, I found the reason - both bug reports seem to point to the
same problem. It does not show up when all dependencies of texlive-base
are installed in the same aptitude or dpkg run, only when they are
configured first and texlive-base is unpacked afterwards.

And of course it is in my new libpaper'ing code...

A fix is in svn, I'll upload soon.

Regards, Frank

-----------
that fixes it

so I did this

apt-get remove --purge texlive-base texlive-common texlive-binaries texlive-doc-base tex-common luatex

(copied down all the stuff being purged and then did)

apt-get install texlive-base texlive-common texlive-binaries texlive-doc-base tex-common luatex

and then we were ok

next step is to reinstall whole batch of files that were removed
:)

How to get rid of all the rc entries in dpkg -l?

2011-09-25T21:14:00.000-07:00

i just did the following and it seems to work

dpkg -l|grep -e ^rc|perl -pe 's/rc\s+(\S+)\s+\d.*/$1/'|xargs apt-get -y remove --purge

use at your own risk!

2011-09-08T10:00:00.000-07:00

oraysa and toratemet interesting project to review at google code

how to persist a connection?

2011-08-17T15:55:00.000-07:00

ssh
or
vpnc?

ssh
then open a screen session
screen
create new window
^-a c
then split window
^-a S ## capitol S
move to other window
^-a tab
grab the window to the frame
^-a "shift+'" and select a window to place there
then make a busy application
wait -n 10 date
will create a very busy application with connection

How to do screen within screen???
^-a-a
ie
^-a then a regular a
done!!!

windws focus follows mouse registry hacks

2011-08-07T19:47:00.000-07:00

inportant information i keep losing.

http://sinewalker.wordpress.com/2010/03/10/ms-windows-focus-follows-mouse-registry-hacks/

1. Run regedit (Win+R, regedit, OK)
2. Open up the key HKEY_CURRENT_USER\Control Panel\Mouse
3. Change the value of the REG_DWORD ActiveWindowTracking to 0×0000001 (1)

4. Open up the key HKEY_CURRENT_USER\Control Panel\Desktop
5. Add 1 to the MSB (most significant byte) of the REG_BINARY UserPreferencesMask. That is, if the current value is 00 3e 03 80 12 00 00 00, then change it to 01 3e 03 80 12 00 00 00. If you used the GUI as above, the MSB will be 41 (which brings the focused window to the front as well), so change it back to 01.

6. To make the focus a little slower, so that pop-up windows are useable, you also want to change the focus timing. Change the REG_DWORD ActiveWindTrkTimeout (also in HKEY_CURRENT_USER\Control Panel\Desktop) to the number of milliseconds to wait before focus shifts to the window under the mouse. I like a value of 0×00000080 (128ms). You might like 200ms (c8), or some faster or slower value.

So, in summary, the Registry keys are as follows for X11-like window focus:

HKEY_CURRENT_USERS\Control Panel\Mouse
REG_DWORD ActiveWindowTracking = 0x00000001 (1)

HKEY_CURRENT_USERS\Control Panel\Desktop
REG_DWORD ActiveWindTrkTimeout = 0x00000080 (128)
REG_BINARY UserPreferencesMask = 01 .. .. .. .. .. .. .. ..

letting a remote machine know about urxvt-unicode terminal

2011-05-22T17:59:00.000-07:00

REMOTE=remotesystem.domain

infocmp rxvt-unicode | ssh $REMOTE "mkdir -p .terminfo && cat >/tmp/ti && tic /tmp/ti"

works nicely if you cant install urxvt there.

see man for urxvt

checking a downloaded and created cd

2011-04-18T10:13:00.000-07:00

ok do a md5sum on the download to check it is ok
then do
ls - filename
this tells you the $size

then do
let $value= $size/2048

dd if=/dev/cdrom bs=2048 count=$value |md5sum
and check this against the file to check you cut the disk right

https://help.ubuntu.com/community/HowToMD5SUM

http://www.echoofeden.com/digest/slaveofone/2007/02/14/writing-hebrew-in-openoffice-under-linux/

2010-08-24T19:29:00.000-07:00

Writing Hebrew in OpenOffice under Linux
by slaveofone

This quick tutorial is provided to help those who, like myself, are or have been interested in utilizing Hebrew in OpenOffice under the KDE desktop.

I’m going to assume, first of all, that you’ve downloaded and installed the latest stable version of OpenOffice. Apparently, versions previous to 2.0.0 have been somewhat buggy trying to render vowel points/diacritics or nikud. Since I’m using Fedora Core 5, I simply used my package manager to update everything and install any extra language components. It doesn’t hurt to update KDE to the lastest release either.

Next, download the SBL Hebrew font from the Society of Biblical Literature website. This is a Unicode Hebrew font (which means you can copy and paste the Hebrew into other software applications and it will be recognized and displayed correctly). Trust me when I say this Hebrew font looks immaculate.

Once you have the font, install it in your KDE Control Center (kcontrol in the terminal) under System Administration – Font Installer

While you’re in Control Center, you need to enable a Hebrew keyboard (so that when you type, it will display Hebrew characters instead of English ones).

click on Regional and Accessibility – Keyboard Layout – double click on Israel (il) to add it

Note: To enable use of vowel points/diacritics or nikud, go to "layout variant" and select "lyx". Now you can write vowels.

Hit apply.

KDE automatically generated a keystroke shortcut for you to switch easily between English and Hebrew keyboards (CTL+ALT+K). To check or change your keystroke shortcut, go to Keyboard Shortcuts. I changed mine to CTL+ALT+Up Arrow.

Lastly, set up OpenOffice.

Go to Tools – Options – Language Settings – Languages – and check to see that Complex Text Language (CTL) is enabled. Then set SBL Hebrew as your default font in Format – Character – CTL font.

Hopefully, you already have two buttons in your menu bar which change the direction of writing from a "left-to-right" orientation to a "right-to-left" one. If not, the default shortcuts are CTL+SHIFT+A (left-to-right) and CTL+SHIFT+D (right-to-left).

Diacritical marks are:

* SHIFT+E = qamets/quamets-chatuf

* SHIFT+R = dagesh/shureq

* SHIFT+U = cholem/cholem-vav

* SHIFT+P = patach

* SHIFT+A = sheva

* SHIFT+S = dagesh/shureq

* SHIFT+G = cholem/cholem-vav

* SHIFT+H = the mark for shin

* SHIFT+J = chireq

* SHIFT+X = segol

* SHIFT+C = qibbuts

* SHIFT+V = chatef-segol

* SHIFT+B = chatef-patach

* SHIFT+N = chatef-qamets

* SHIFT+M = tsere

Check out the keyboard chart map below and get your Hebrew on.

5 Responses to “Writing Hebrew in OpenOffice under Linux”

* #370

* April 9th, 2007

* 1721

Fantastic post. Took hours to find something which would simply explain how keyboards and Unicode work on Linux. Sadly I’m a newbie to Linux (Ubuntu) and am used to Keyman on Windows systems.

Thanks,

Joshua

Do you know how to make vowel points a different color than the consonants. I would like to be able to type a consonant, switch the color, and then type the vowel point in a different color, but this doesn’t work. Any ideas? Thanks.

Reply to Josh’s comment

3.

nadav kavalerchik Says:

* #1039

* February 8th, 2008

* 1501

as far as i know the si1452 is a more standard punctuation layout as defined by the Israeli standards institute.

Fedora, Debian and Ubuntu have it ready by default

(along side with lyx)

i use the following configuration in the xorg.conf file to enable Win+NUM for the various punctuation marks.

Option "XkbLayout" "us,il"

Option "XkbVariant" ",si1452"

Option "XkbOptions" "grp:alt_shift_toggle,grp_led:scroll,lv3:lwin_switch"

keyboard layout : http://culmus.sourceforge.net/si1452.html

:-)

Reply to nadav kavalerchik’s comment

4.

Philip Aston Says:

* #1105

* April 10th, 2008

* 1506

Assisting with Shul magazine… regrettably I couldn’t get culmus working, but the simple device of adding the font from this website- and your excellent advice- has solved it. And you do have to change the keyboard toggle shortcut, because Ctrl Alt K isn’t recognized in the ivrit keyboard!

Reply to Philip Aston’s comment

5.

zahav Says:

* #1227

* November 7th, 2009

* 0119

This post is quite old, but what I enjoy from it is new. I have tried many ways in controlling niqudot, but this is the best solution I found. Thanks a lot.

* Resources

date format in the output from "ls -l"

2010-07-21T19:43:00.000-07:00

Yes, the default has changed. You can change the default with TIME_STYLE
environment variable, like this:

export TIME_STYLE=long-iso

Related tips here:
http://people.debian.org/~osamu/pub/po4a/html/ch09.en.html#_customized_display_o
f_time_and_date

nice set of tutorials for debian and discussion

hat tip
teemu likonen

http://www.debian.org/doc/manuals/debian-reference/debian-reference.en.html#_cus
tomized_display_of_time_and_date

/etc/default/keyboard replaces /etc/X11/xorg.conf as place for control of keyboard settings. intereresting

2010-06-02T11:11:00.000-07:00

notice that this information was originally present in /etc/X11/xorg.conf and it got transfered over.

reading the file
# If you change any of the following variables and HAL and X are
# configured to use this file, then the changes will become visible to
# X only if HAL is restarted. In Debian you need to run
# /etc/init.d/hal restart

this seems false to me. needs a reboot to modify in my case.

# The following variables describe your keyboard and can have the same
# values as the XkbModel, XkbLayout, XkbVariant and XkbOptions options
# in /etc/X11/xorg.conf.

XKBMODEL="pc104"
XKBLAYOUT="us,il"
XKBVARIANT="lyx"
XKBOPTIONS="grp:switch,grp:alt_shift_toggle,grp_led:scroll"

# If you don't want to use the XKB layout on the console, you can
# specify an alternative keymap. Make sure it will be accessible
# before /usr is mounted.
# KMAP=/etc/console-setup/defkeymap.kmap.gz

-------------
also the setting in /etc/default/console-settings control the font and stuff in console mode. so can choose Uni1 instead of latin15 to get hebrew characters from the console

how to combine directory of pdf files into one

2010-03-19T10:01:00.000-07:00

assume they are arranged in alphabetical order then

gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=combined.pdf -dBATCH *.pdf

perl regexp one liner to copy some images

2009-11-17T21:58:00.001-08:00

oki have the images from one day on the camera card and i need to copy them
this works!

ls /mnt/usb/dcim/100ncd80/ -ltr |grep 2009-10-20|perl -pe 's/.*(dsc.*)/$1/'
lists the images i want
so
cd /mnt/usb/dcim/100ncd80/
then

ls -ltr |grep 2009-10-20|perl -pe 's/.*(dsc.*)/$1/'|xargs -I {} cp {} /home/debianuser/conferences/conf20091118

this works well!

and here is the flip images script to rotate the images

cat bin/flip_journal.pl
#!/usr/bin/perl -w
use strict;
my $angle=shift;
my $dir=shift;
if (!($angle && $dir)) {print"missing either the angle or the directory"; die;}
opendir (IN,$dir);
my @list;
@list=readdir (IN);
foreach (@list)
{
next if ($_ eq '.' || $_ eq '..');
system ("convert -rotate $angle $_ $_ ");
}

sleep article on notebook vs sleepd

2009-11-10T06:52:00.000-08:00

http://www.linux.com/archive/feature/55988

idea of using gnome-power-manager

now see the comment

Suspend assumes gnome/kde is running

Pressing the suspend-key will call /etc/acpi/sleebtn.sh, which uses acpi_fakekey to generate an event on /dev/input/event*, which is received by gnome-power-manager or similar applications.

To get suspend to work without gnome-power-manager,
replace the acpi_fakekey line in sleepbtn.sh with the line:/etc/acpi/sleep.sh sleep

now we need to compare to setting this up with the sleepd

more on .stumpwmrc

2009-10-31T21:26:00.000-07:00

(in-package :stumpwm)
;;(setf *new-window-preferred-frame* :empty)
(setf *mouse-focus-policy* :sloppy)
;; really messed stuff up check this (set-prefix-key (kbd "F20")) ; F20 = start key i think?

(defcommand windowlist-pull (&optional (fmt *window-format*)) (:rest)
(if (null (group-windows (current-group)))
(message "No Managed Windows")
(let* ((group (current-group))
(window (select-window-from-menu (sort-windows group) fmt)))
(if window
(pull-window window)
(throw 'error :abort)))))
(define-key *root-map* (kbd "C-z") "windowlist-pull")

(defcommand conkeror () () (run-shell-command "conkeror"))
(define-key *root-map* (kbd "c") "conkeror")
(defcommand konsole () () (run-shell-command "konsole"))
(define-key *root-map* (kbd "x") "konsole")
(defcommand emacsa () () (run-shell-command "emacs"))
(define-key *root-map* (kbd "e") "emacsa")
(defcommand iceweasel () () (run-shell-command "iceweasel"))
(define-key *root-map* (kbd "i") "iceweasel")

how to ssh through ssh to a secondary destination

2009-10-21T10:42:00.002-07:00

sh -t -t dest.in.at.ion ssh sec.ondary.destina.ation

stumpwmrc and conkerrc

2009-10-18T09:53:00.000-07:00

.stumpwmrc
in-package :stumpwm)
;;(setf *new-window-preferred-frame* :empty)
(setf *mouse-focus-policy* :sloppy)
;; really messed stuff up check this (set-prefix-key (kbd "F20")) ; F20 = start key i think?

(defcommand windowlist-pull (&optional (fmt *window-format*)) (:rest)
(if (null (group-windows (current-group)))
(message "No Managed Windows")
(let* ((group (current-group))
(window (select-window-from-menu (sort-windows group) fmt)))
(if window
(pull-window window)
(throw 'error :abort)))))
(define-key *root-map* (kbd "C-z") "windowlist-pull")

------------------
while for the

.conkerorrc

let (home = get_home_directory()) {
home.append("home.html");
homepage = home.path;
}
define_key(content_buffer_normal_keymap, "b", "back");
define_key(content_buffer_normal_keymap, "C-b", "bookmark");

proxy_server_default = "localhost";
proxy_port_default = 8080;

function set_proxy_session (window, server, port) {

if (server == "N") {
session_pref ('network.proxy.type', 0); //direct connection
window.minibuffer.message ("Direction connection to the internet enabled for this session");
} else {
if (server == "") server = proxy_server_default;
if (port == "") port = proxy_port_default;

session_pref ('network.proxy.socks', server);

session_pref ('network.proxy.socks_port', port);

session_pref ('network.proxy.type', 1);

window.minibuffer.message ("All protocols using "+server+":"+port+" for this session");
}
}

interactive ("set-proxy-session", "set the proxy server for all protocols for this session only",
function (I) {
set_proxy_session (
I.window,
(yield I.minibuffer.read ($prompt = "server ["+proxy_server_default+"] or N: ")),
(yield I.minibuffer.read ($prompt = "port ["+proxy_port_default+"]: ")));
});

create a fixed device for udev

2009-09-13T11:15:00.000-07:00

i stole this from
http://www.debianhelp.co.uk/udev.htm

fconfig eth0
eth0 Link encap:Ethernet HWaddr 00:AB:CD:12:34:56
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:3 errors:0 dropped:0 overruns:0 carrier:3
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:180 (180.0 b)
Interrupt:185 Base address:0xc000

In the above example HWaddr is your MAC address 00:AB:CD:12:34:56

Using udev

Create a new file in the udev rules directory, e.g. /etc/udev/rules.d/010_netinterfaces.rules

In it specify the renaming in the following way for each interface on its own line

KERNEL="oldnameprefix*", SYSFS{address}=="MACaddress", NAME="newname"

where the oldnameprefix is typically eth. Note that in the MAC address, the hexadecimal digits should be in lowercase, otherwise udev fails to match them properly with the network interface.

You have quite a bit of freedom in choosing the new name, We recommend to keep it short and without any spaces or weird characters though. You can e.g. specify a fixed eth0, eth1, eth2 for specific MAC addresses, or you can name them after their use, or anything really. Remember that some applications that poke on a low level may dislike them not being called in the normal fashion of eth0, eth1..etc

Examples using udev

Example: Three network interfaces being present on a computer, setting a fixed eth0, eth1 and eth2 as their names.

KERNEL=="eth*", SYSFS{address}=="00:12:34:fe:dc:ba", NAME="eth0"
KERNEL=="eth*", SYSFS{address}=="00:56:78:98:76:54", NAME="eth1"
KERNEL=="eth*", SYSFS{address}=="00:90:ab:32:10:fe", NAME="eth2"Example: Three network interfaces (one Intel, one NVIDIA, and one 3Com) being present on a computer, naming them after the manufacturer of the interfaces.

KERNEL=="eth*", SYSFS{address}=="00:12:34:fe:dc:ba", NAME="eth-intel"
KERNEL=="eth*", SYSFS{address}=="00:56:78:98:76:54", NAME="eth-nv"
KERNEL=="eth*", SYSFS{address}=="00:90:ab:32:10:fe", NAME="eth-3com"

Updating network configuration

If you named the interfaces in a different fashion as they were named before, the network configuration needs to be updated for the new interface device names to be used.

Edit the /etc/network/interfaces file, and change all instances of the old names to the new names.

E.g. if you previously used eth0 and have renamed it newname, you'd replace all instances of eth0 in that file with newname

But if you just put a fixed eth0, eth1, ... as their names, you just need to make sure the one you want to have as the primary network interface is set to the one you want in the file.

Example

Having renamed the existing eth0, eth1, and eth2 to eth-intel, eth-nv and eth-3com, choosing to use the eth-intel one as the primary interface

The /etc/network/interfaces file before changes

# The primary network interface
auto eth0
iface eth0 inet dhcp

# Currently unused network interfaces
iface eth1 inet dhcp
iface eth2 inet dhcpThe file after changes:

# The primary network interface
auto eth-intel
iface eth-intel inet dhcp

# Currently unused network interfaces
iface eth-nv inet dhcp
iface eth-3com inet dhcp

Reboot and verify your configuration

Reboot the computer and verify that the new network interface names are in use with e.g. ifconfig

#ifconfig newname

Where newname is the new interface name you specified. Repeat procedure for each one you renamed.

debian apt-get dist-upgrade makes login as root fail

2009-09-11T11:05:00.000-07:00

i tried many rescue attempts
using
Linux init=/bin/sh
mount -o remount,rw /
passwd
but rejected new passwd ...

so then i found this
passwd -d root
passwd root
enter passwd twice and it works
good.
i found this at

http://openplug.org/plugforum/index.php?topic=110.0

great rescue....

vpnc: receiving packet message too long

2009-09-11T05:28:00.000-07:00

check the router eth1 it has mtu set too small to 576 need to reset it to 1500
so go to
/etc/rc.local
add line
ifconfig eth0 mtu 1500
and done
hat tip:
http://metauser.net/2008/11/15/vpnc-receiving-packet-message-too-long/

run X apps as root

2009-08-01T20:15:00.000-07:00

su
password
cd
rm .Xauthority
ln -s /home/user_name/.Xauthority .Xauthority

that should do it.
there are other ways as well...

postgresql backup information

2009-06-12T08:05:00.000-07:00

see http://linux-addiction.blogspot.com/2009/02/how-to-backup-and-restore-postgresql.html

How To Backup and Restore PostgreSQL Database Using pg_dump and psql
pg_dump is an effective tool to backup postgres database. It creates a *.sql file with CREATE TABLE, ALTER TABLE, and COPY SQL statements of source database. To restore these dumps psql command is enough.

Using pg_dump, you can backup a local database and restore it on a remote database at the same time, using a single command. In this article, let us review several practical examples on how to use pg_dump to backup and restore.

For the impatient, here is the quick snippet of how backup and restore postgres database using pg_dump and psql:

Backup: $ pg_dump -U {user-name} {source_db} -f {dumpfilename.sql}

Restore: $ psql -U {user-name} -d {desintation_db}-f {dumpfilename.sql}

How To Backup Postgres Database
1. Backup a single postgres database

This example will backup erp database that belongs to user geekstuff, to the file mydb.sql

$ pg_dump -U geekstuff erp -f mydb.sql

It prompts for password, after authentication mydb.sql got created with create table, alter table and copy commands for all the tables in the erp database. Following is a partial output of mydb.sql showing the dump information of employee_details table.

--
-- Name: employee_details; Type: TABLE; Schema: public; Owner: geekstuff; Tablespace:
--

CREATE TABLE employee_details (
employee_name character varying(100),
emp_id integer NOT NULL,
designation character varying(50),
comments text
);

ALTER TABLE public.employee_details OWNER TO geekstuff;

--
-- Data for Name: employee_details; Type: TABLE DATA; Schema: public; Owner: geekstuff
--
COPY employee_details (employee_name, emp_id, designation, comments) FROM stdin;
geekstuff 1001 trainer
ramesh 1002 author
sathiya 1003 reader
\.
--
-- Name: employee_details_pkey; Type: CONSTRAINT; Schema: public; Owner: geekstuff; Tablespace:
--
ALTER TABLE ONLY employee_details

ADD CONSTRAINT employee_details_pkey PRIMARY KEY (emp_id);

2. Backup all postgres databases

To backup all databases, list out all the available databases as shown below.
Login as postgres / psql user:

$ su postgres

List the databases:

$ psql -l

List of databases
Name | Owner | Encoding
-----------+-----------+----------
article | sathiya | UTF8
backup | postgres | UTF8
erp | geekstuff | UTF8
geeker | sathiya | UTF8

Backup all postgres databases using pg_dumpall:

You can backup all the databases using pg_dumpall command.

$ pg_dumpall > all.sql

Verify the backup:

Verify whether all the databases are backed up,

$ grep "^[\]connect” all.sql
\connect article
\connect backup
\connect erp
\connect geeker

3. Backup a specific postgres table

$ pg_dump --table products -U geekstuff article -f onlytable.sql

To backup a specific table, use the –table TABLENAME option in the pg_dump command. If there are same table names in different schema then use the –schema SCHEMANAME option.
How To Restore Postgres Database
1. Restore a postgres database

$ psql -U erp -d erp_devel -f mydb.sql

This restores the dumped database to the erp_devel database.
Restore error messages

While restoring, there may be following errors and warning, which can be ignored.

psql:mydb.sql:13: ERROR: must be owner of schema public
psql:mydb.sql:34: ERROR: must be member of role "geekstuff"
psql:mydb.sql:59: WARNING: no privileges could be revoked
psql:mydb.sql:60: WARNING: no privileges could be revoked
psql:mydb.sql:61: WARNING: no privileges were granted
psql:mydb.sql:62: WARNING: no privileges were granted

2. Backup a local postgres database and restore to remote server using single command:

$ pg_dump dbname | psql -h hostname dbname

The above dumps the local database, and extracts it at the given hostname.
3. Restore all the postgres databases

$ su postgres
$ psql -f alldb.sql

4. Restore a single postgres table

The following psql command installs the patientinfo table in the database pacs.

$ psql -f patientinfo.sql pacs

repair usb drive

2009-05-07T09:35:00.000-07:00

nice article in linux-journal

http://www.linuxjournal.com/article/8366

How a Corrupted USB Drive Was Saved by GNU/Linux
June 14th, 2005 by Collin Park in

* HOWTOs

Would SUSE and fsck be able to recover the data in a usable way?
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My friend's brother had a 512MB Lexar Media Jumpdrive Pro USB drive that became corrupted after using it with Windows 2000. His IT department was able to get back some but not all of the file contents, but without any file names. On his own, he tried some recovery utilities, but all failed. Using a typical Linux distro--in this case SuSE 8.0--however, it wasn't hard to recover almost all of the data from the drive along with the filenames and to burn a CD-ROM of the contents.
USB Drive Ruined by Windows

Here's what I heard about the data loss:

Date: Sun, 1 Aug 2004 17:06:03 -0700
Subject: USB

... My USB drive is a
Lexar Media USB Jumpdrive Pro 2.0 (512 MB). I was working
on it in a computer with Windows 2000 and logged off before
ejecting the drive. Next time when I tried to use it,
it showed up as a Removable drive rather than the usual
Lexar Media drive and when I tried to open it, it said the
drive was not formatted; and under Properties, 0 bytes free
and used space and file system "RAW"

According to Lexar tech support, there is a bug with
Windows 2000 (that MS never bothered to fix) and can corrupt
the drive when it is removed without proper eject. They
recommend EasyRecovery Pro for data recovery which did
allow me to recover some files (> 500) using their RAW data
recovery program (all other tool failed because usually
said "no recognizable file on disc"). Unfortunately,
all the file names are lost and some files are gone.

The big questions was "can Linux read the drive?" A Web search of "linux usb jumpdrive pro" gave me hope that my kernel, 2.4.18 on SuSE 8.0, would recognize the drive in question. So, as root, I typed:

# tail -f /var/log/messages

and plugged the drive into a USB socket. Here's what appeared; I removed "Aug 5 01:32:15 linux kernel:" from each line below):

usb.c: registered new driver usb-storage
scsi0 : SCSI emulation for USB Mass Storage devices
usb-uhci.c: interrupt, status 3, frame# 1313
Vendor: LEXAR Model: JUMPDRIVE PRO Rev: 0
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
SCSI device sda: 1001952 512-byte hdwr sectors (513 MB)
sda: Write Protect is off
sda: sda1
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 4
USB Mass Storage support registered.

also according to one of the responders can try
http://www.brzitwa.de/mb/gpart/

MPX merged into X!! multi user mouse ideas

2009-05-01T12:42:00.000-07:00

would like to use multiple mice at once

MPX for X gives multiple input devices multipointer x server
can convert already created applications to multipoint

http://www.neowin.net/forum/index.php?s=32dde4535c5ff99aacf474b8db4d4a54&showtopic=574028&pid=588710663&st=0&#entry588710663

now look at this

http://wearables.unisa.edu.au/mpx/?q=node/144
http://lists.freedesktop.org/archives/xorg/2008-May/035641.html

For those of you watching xorg-commits, you may have noticed that MPX has been
merged into master [1].
The client-side libraries and protocol headers have been merged quietly last
week already, this time is just the xserver itself.

A change in the previously proposed schedule [2]: the XKB rework didn't make
it. With the recent SSL issue and other workloads, Daniel wasn't able to get
it ready in time. We agreed on merging MPX without it, as it should not affect
XKB much anyway.

A number of changes went in since the announce, the most important being the
return of input device cordinate scaling. Tablets can thus be used. Thanks to
Magnus Vigerloef for his help on this matter.

The input ABI has been bumped and all the input drivers on fdo have been
updated to compile with the new API. You will need to get the latest version
however. I don't think the ABI will remain stable until the next release, but
I figured input modules not loading encourages people to fetch the latest
release rather than complaining about them not compiling anymore.

The video ABI has not been bumped yet, but you _must recompile_ your video
driver. No API changes, a recompile is enough.

As previously mentioned, existing setups should not be affected and anything
that changes is most likely a bug. Unless you create additional cursors/foci,
in which case the border between bug and broken UI paradigm is somewhat
blurry.

For the impatient, run the following commands:
Update xorg/app/xinput to the most recent version.

xinput --list --short
xinput --create-master "foobar"
xinput --reattach "MyMouse" "foobar pointer"
xinput --reattach "MyKeyboard" "foobar keyboard"

It is at this point you have a second set of devices that work independently.
It is at this point that you may realise that neither GNOME, KDE, nor any
other environment actually works decently with multiple devices. So start
fixing them right now.

To go back to a standard setup:

xinput --reattach "MyMouse" "Virtual core pointer"
xinput --reattach "MyKeyboard" "Virtual core keyboard"
xinput --remove-master "foobar pointer"

Have fun. Input bugs that result from the MPX merge can be assigned to me.
So long, and thanks for all the mice.

Cheers,
Peter

outrageous!

combine and read gnome developer mails

2009-03-21T18:56:00.000-07:00

i like to grab the emails from the sites and read them offline using mutt -f all-mails.txt
well i download the tarballs and then combine into one big file using a perl script.
then i read with mutt -f.
sometimes there is a problem they replaced me@address.com by me at address.com which messes us
with the reading by mutt. so i do alt-x replace string _at_ by @ in emacs (_=space) and i am done.
now it shows up in mutt.

ssh with no key for backup purposes

2009-03-15T12:05:00.000-07:00

may use rsa or dsa

There are those of us that do a lot of ssh during the course of a day. I know I do quite a bit for accessing my files from my office. In any event you’ll probably want to setup public key authentication which allows you to login via ssh without a password.

Of course this adds a level of convenience for you, but could be considered less-secure. While its difficult to spoof an rsa/dsa encryption key (probably more difficult than a simple password) anyone that has access to your machine would be able to access the remote machines via this authenticated key.

There are a few quick steps for setting this up that I’ll outline below.

First you’ll need to generate your local public key. This is the public end of a local public / private pair that you’ll share with the remote machine to identify you.

ssh-keygen -t rsa (on your local machine)

Second you’ll need to copy this key to the remote machine using a command such as:

scp ~/.ssh/id_rsa.pub user@yourserver.com:

Lastly, log into the remote machine via ssh (using your password for the last time!) and use this command to add the newly generated key to the list of authenticated keys:

cat id_rsa.pub >> .ssh/authorized_keys

You’ll also probably want to delete the original key as well.

rm id_rsa.pub

At this point a copy of your key is now stored on the remote machine as an authorized keys and any ssh connection coming from the local machine will match that key and connect with the key authentication instead of a password. So nice.

…just remember that anyone with access to your machine will now have this access as well. Definitely keep this in mind if you’re using any kind of a public machine.

perl objects

2009-03-12T08:26:00.000-07:00

how to do it easily?

class::accessor
moose
class::struct
class::methodmaker

ideas for distrbution
hxs
http://mathforum.org/~ken/perl_modules.html
module::build

look at graham barr tutorial article on glade and gtk2

where are the install scripts for packages kept?

2009-02-06T11:08:00.000-08:00

/var/lib/dpkg/info

Look for .preinst

and there they are!

tweaking the disk usage tune2fs

2009-02-01T18:30:00.000-08:00

tune2fs -m 0 /dev/md0 to use the full space on the drive.

emacs change from Unix to Dos endings?

2009-01-28T09:19:00.000-08:00

How to change file line endings between Mac/Dos/Unix?

Open the file, then do “Alt+x set-buffer-file-coding-system” (Ctrl+x Enter f). Give it a value of mac, dos, unix. Then, when you save the file, it'll be saved with the proper encoding for newlines.

alternatively

ctl-x return f then dos

Note: Unixes (including Linuxes and Mac OS X) uses LF (ascii 10; line feed) for newline. Mac OS Classic uses CR (ascii 13; carriage return) for newline. (Mac OS X prefers LF but accepts CR too) Windows uses CR followed by LF ("\r\n") for its newline char. See wikipedia newline for detail.

To do it batch on a list of files, use the following lisp code:

(defun to-unix-eol (fpath)
"Change file's line ending to unix convention."
(let (mybuffer)
(setq mybuffer (find-file fpath))
(set-buffer-file-coding-system 'unix) ; or 'mac or 'dos
(save-buffer)
(kill-buffer mybuffer)
)
)

(mapc 'to-unix-eol
(list
"~/whatever/myfile1"
"~/whatever/myfile2"
"~/whatever/myfile3"
; ...
)
)
If you want the function to work on marked files in dired, then use the following code:

(defun dired-2unix-marked-files ()
"Change to unix line ending for marked (or next arg) files."
(interactive)
(mapc 'to-unix-eol (dired-get-marked-files))
)

Select the code and do “Alt+x eval-region”, then “Alt+x dired”, then press “m” to mark the files you want, then do “Alt+x dired-dos2unix-marked-files”.

hat tip:

http://xahlee.org/emacs/emacs_adv_tips.html

autohotkey for linux

2009-01-25T07:03:00.000-08:00

autohotkey on windows allows easy scripting and control of hotkeys.
zenity - display GTK+ dialogs may be useful for quick building a quick dialog for script
xwininfo, xprop to grab info on a window
wmctrl -l gets list of windows

on linux can get the 'spy' information used in autohotkey from the programs
xwininfo and xprop which give you the window id and the contents of the title.

Q what about the contents of the status bar at the bottom?
q what about capturing keys before the application?

look and read about khotkeys
http://bugs.kde.org/show_bug.cgi?id=165441
seems to be buggy lately

please read this article
http://www.linuxformat.co.uk/wiki/index.php/Desktop_scripting_with_DCOP

what about capture and script mouse movement and position?
seems to be part of khotkeys capability

list of existing hotkeys
http://www.clug.ca/node/225

http://ubuntuforums.org/showthread.php?t=893506

uses the idea of "import" from imagemagick which gives a window

Re: Script to take screenshot of a specific window

I messed around a bit more and may have addressed some of your concerns... here's the new code:

Code:

#!/bin/sh
echo "Enter the name of the window of which you'd like to take a screenshot:"
read window
wmctrl -a $window
window_id=`wmctrl -l | grep -i $window | awk '{print $1}'`
import -window $window_id -crop 1390x960+5+80 foo.jpg
gconftool -t string -s /desktop/gnome/background/picture_filename `pwd`/foo.jpg

wmctrl -a $window bring the focus to the window which you've named (and that's another question I had-- you said the title was dynamic, but is part of it static enough to where you could include it in your code. That is, instead of reading standard input, which would actually require you to do something, could you do...

Code:

window_id=`wmctrl -l | grep -i  | awk '{print $1}'`

I know you had something like that in your code above, but I wasn't sure if you wanted to name the window at the point at which you take the screenshot, or just plop part of the name in the code. Either way...)

I had to put the focus on the given window because of the issue you raised of different workspaces-- if the window of which you're taking a screenshot is in your current workspace, this code doesn't need to be there. wmctrl can get the window ID just fine and import can use the window ID to take the screenshot of the appropriate window.

However, if you're in workspace A and the window is in workspace B, you'll get this error, as we saw before:

Code:

import: unable to read X window image `0x022000d9': Resource temporarily unavailable.

I'm sure there's a way to fix this, so I'll keep searching.

gconftool, with the given parameters, sets foo.jpg as the background.

So the only hiccup I've run across is that wmctrl puts the focus on the screenshot window when it's doing it's work. I don't know if you're working in an environment where that shift of focus matters, but it would certainly be nice to let the script do its work in the background, eh?

If you want to do this at a given time, I bet including the script in your crontab would be the easiest way.

Re: Script to take screenshot of a specific window

I did some searching and came up with something that may work for you:

First, you have to install imagemagick from the repositories, which contains a command called import, which allows you to take a picture of any active window and save it as a file. You may want to read the man page on import for more information. So to start, open a Terminal and type this:

Code:

sudo apt-get install imagemagick
man import

You'll also need to use a program called xwininfo, which gives you a bunch of information about a given window, including what's called a "window ID". This is helpful in determining the window of which we're taking a screenshot. xwininfo should already be installed on your system.

I dashed up this shell script, which doesn't work completely. It's a start, though. Please note that I'm quite new to shell scripting and there are other, more experienced people here who may be of more help.

Code:

#!/bin/sh
echo "Enter the name of the window:"
read window
window_id=`xwininfo -name $window | awk '{print $4}' | grep -i 0x`
import -window $window_id $window.jpg

I mostly pieced this together from stuff I found from Google...

Line 1: #!/bin/sh
Line 2: Prints "Enter the name of the window:"... just prompts the user for the name of the window
Line 3: Reads standard input and stores it in a variable called "window"
Line 4: Defines a variable called window_id -- basically, you can execute xwininfo with the name parameter and follow it by the name of the window (which in our case should be the variable we just created, $window); pass the output of that to an awk command (I've never used awk, but I think this gets the fourth element of an array, which prints a column of data from the output of xwininfo -name $window, and which contains our window ID; pass that output again to grep and look for the string '0x' (our window ID, by default, is a hexadecimal value, and should always begin with a 'Ox').
Line 5: The import command imports the window with the window ID window_id and stores it in a file called $window.jpg (hence, if you take a screenshot of Calculator, the file should be called Calculator.jpg.

Like I said before, this doesn't work completely, but I thought I'd post it anyway. I've gotten it to work for small programs like Calculator, Dictionary, Atomix... nothing like Firefox, gedit, etc. . If you try to do it for larger programs, you'll actually get an error of the following sort:

Code:

import: unable to read X window image `0x3200efb': Resource temporarily unavailable.

I think this arises from the fact that these programs actually yield multiple window IDs:

Code:

dill@LAMP:~$ xwininfo -tree -root | grep gedit | awk '{print $1}'
0x3000071
0x3000003
0x3000001
0x300001e

The script should also probably check user input in some way, and apply some sort of conditional for the case when the window name isn't valid:

Code:

dill@LAMP:~$ ./test.sh
Enter the name of the window:
abc
xwininfo: error: No window with name abc exists!
import: missing an image filename `abc.jpg'.

So yeah, good luck! I'll try to work on the problem, too, but this should get you started. I've included all of the code below step-by-step, in case it helps:

Code:

sudo apt-get install imagemagick
touch window_capture.sh

Now open your favorite text editor and insert the following code:

Code:

#!/bin/sh
echo "Enter the name of the window:"
read window
window_id=`xwininfo -name $window | awk '{print $4}' | grep -i 0x`
import -window $window_id $window.jpg

Now, just make sure your permissions are ok and you should be good to go...

Code:

chmod 755 window_capture.sh
./window_capture.sh

Thanks for all the help. I was having issues with trying to get the window id based on title because the the window I am interested in has a dynamic title. I could not find a way to use wildcards for the title using xwininfo.
I did find wmctrl which will generate a list of open windows. So, I used the following to get the ID.

Code:

sWinId=`wmctrl -l | grep <partial_title> | awk '{print $1}'`

I used this with import (thanks Dill) to get the screenshot and crop it accordingly.

Code:

import -window $sWinId -crop 1390x960+5+80 <filename>

Unfortunately, I've hit another wall which I doubt can be avoided.

What I am trying to do is take a screenshot of a window periodically and then make that image my desktop background. Unfortunately, the window must be on the current workspace for this to work which defeats the purpose of what I am trying to accomplish. Perhaps there is an app available that emulates KDE's "Use program for background" function?

mutt forward mail with attachments

2008-12-30T17:11:00.000-08:00

1) 'b' bounces the message completely unmodified to a new address

2) 'Esc E' uses a current message as a template for a new message,
can modify attachments and text

*) Esc F to clear the "From" address (Esc F) from the send men

*) S to change subject

xargs with complicated command line

2008-12-18T07:17:00.000-08:00

xargs will pipe to a command. what if it has complex structure?

ls $1 | xargs -I {} -t mv $1/{} $2/{}

here the I command says use {} to replace the piped output

thus we use

find .  -iname  '*nons*' -print0 |xargs --null -I {}  cp {} ../nonstandard-analysis/{}

to deal with
1) spaces in output file names from find we use -print0 and
correspondingly to match we use  xargs --null

2) to deal with the xargs applied command which has multiple arguments we use the -I {}
to fill in for the xargs output

cool!

Problem with refiltering a Mail directory

2008-12-14T00:31:00.001-08:00

I decided to split my perldl messages from incoming directory
however when I foolishly decided to run

http://markmail.org/message/tz6isa4n4ubyssuc#query:rerun procmail on a maildir+page:1+mid:tukr7f524zmykz7n+state:results

#/usr/bin/sh
cd Mail/inbox/cur
for file in *; do
procmail < $file
done

this gave me multiple copies of the original mails
then if I ran this multiple times I had a mess with 30,000 mails in my inbox
instead of 4301
so I had to run this
script-dealwithdups.pl
#!/usr/bin/perl -w
use strict;
use File::Find::Duplicates;
my $in=shift;

my @dupes = find_duplicate_files("$in");
my $length;
foreach my $dupeset (@dupes) {
my $length= scalar @{$dupeset->files} ;
if ($length >= 1) {

for (my $i=0; $i<$length -1 ;$i++) {
#print $ { $dupeset->files} [$i]; print "\n";
unlink $ { $dupeset->files} [$i];
}
}
where I got File::Find::Duplicates from CPAN

disable ssh timeout how to

2008-12-09T12:31:00.000-08:00

Disable SSH timeout

http://www.techrecipes.net/linux/disable-ssh-timeout.html

By default, most SSH servers are configured to forcibly disconnect inactive or idle clients, or actually those with no network activity. This is not good for some people especially if one is setting up a (reverse) tunnel to the server where the tunnel should remain established whenever they need it.

There are 2 methods to overcome this problem,
1) not to stay idle or by keeping the network activity busy, and
2) if you have root access to the server, change the SSHd configuration at the server.

How can the network be kept busy while you are not attending the session? The trick is to run any program that keep updating the screen, such as mtr or top. The program should generate some network activity, and keep the session active and connected. Use the program screen to create virtual terminals where one terminal is dedicated to the program mtr or top.

If you have root access to the server, you might want to just change the SSHd configuration file. To do this, edit the file /etc/ssh/sshd_config and change the following options as in the example below;

TCPKeepAlive yes ClientAliveInterval 30 ClientAliveCountMax 99999

Don’t forget to restart the SSH server afterwards with the following command;

# /etc/init.d/sshd restart

build perl modules the debian way

2008-11-28T11:23:00.000-08:00

http://www.debian-administration.org/articles/78

apt-get install dh-make-perl

tar -pzxvf Locale-Hebrew-1.04
dh-make-perl Locale-Hebrew-1.04/

cd Locale-Hebrew-1.04
debuild
cd ..
ls *.deb
dpkg -i liblocale-hebrew-perl_1.04-1_amd64.deb

it works nicely.

combine pdf files to one

2008-11-27T12:24:00.000-08:00

2 ways
http://opendevice.blogspot.com/2007/03/merge-pdf-files-on-linux.html
http://www.newlinuxuser.com/merge-multiple-pdfs-into-one-file/

install gs or pdftk

pdftk first.pdf second.pdf cat output firstANDsecond.pd

or else

gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=firstANDsecond.pdf -dBATCH first.pdf second.pd

finnix a debian testing distro with lvm2

2008-11-27T10:10:00.000-08:00

http://www.finnix.org/

wget http://www.finnix.org/releases/92.0/finnix-92.0.iso

Ok:

If we want to use lvm2 we need to be able to boot from a live distro and access the data.
Will we find this with knoppix/kanotix etc?

we need to be able to do

pvscan

say we have a volume group data on a physical volume 'data'
vgchange -ay data

(if it was formally exported before from old system (fat chance) then you can do
vgimport data

mkdir /data
then
mount /dev/data/ /data
say to load the information
see
http://tldp.org/HOWTO/LVM-HOWTO/recipemovevgtonewsys.html
 
-----------
2. Lets say to start a new physicalvolume and create a volume group

vgcreate volgroup1 /dev/sda1

vgdisplay

lvcreate -L5G -n logicalvolume
mkfs.ext3 /dev/volgroup1/logicalvolume

then can mount  it

mount /dev/volgroup1/logicalvolume /data

say.

convert images to right size and format for presentations

2008-11-20T10:23:00.000-08:00

convert a bunch of images to the right size for a presentation
try this

convert -sample 936x720 infile.xfc outfile.jpg

will do the job

unwanted taps on trackpad while typing

2008-11-16T20:34:00.000-08:00

a common problem for laptops.
what to do?

see

https://wiki.ubuntu.com/InstallingUbuntuOnADellXPSM1530#Touchpad stays on while typing

Touchpad stays on while typing

To fix this, the best answer I could find was this one, where you simply install a deb package to add a file to the Xsession.d directory, which gets run every time your start X. Here's are contents:

# Starts the Synaptic daemon which deactivates the touchpad while typing
# This executes for all users

SYNDAEMON=/usr/bin/syndaemon
SYN_IDLE=1  #Seconds to wait after last key press before enabling touchpad

if [ -x $SYNDAEMON ]; then
 $SYNDAEMON -i $SYN_IDLE -d
fi

This is a very simple and elegant way to fix the problem. Click here to download the package directly.

dpkg -L xserver-xorg-input-synaptics

includes this program:

syndaemon - a program that monitors keyboard activity and disables the
touchpad when the keyboard is being used.

create pdf of articles and books

2008-11-13T08:41:00.000-08:00

Nice instructions are available from

http://www.mat.univie.ac.at/~michor/howto.html
on how to create pdf files from scanner of articles.
take a look at this.

grab a few pdf files on web

2008-11-01T18:57:00.000-07:00

#!/usr/bin/perl -w
use strict;

open (IN, "list");
my @data=;
my @out= map { local $_ =$_; s/(.*href=\")(.*)(\".*)/$2/; $_} @data;

my @out1;
my $pref='http://ocw.mit.edu';

foreach my $example (@out) {
my $out=$pref.$example;
push(@out1,$out);
}

foreach my $stuff (@out1) {
#print "$stuff \n";
system("wget $stuff");
}

Using regex in Map function

2008-11-01T18:46:00.000-07:00

need to localize if you want not to get all 1's as output of the map (since match return is
only 1, regexp substitution occurs in place with $_).

#!/usr/bin/perl -w
use strict;

open (IN, "list");
my @data=;
my @out= map { local $_ =$_; s/(.*href=\")(.*)(\".*)/$2/; $_} @data;

see merlyn at

http://www.perlmonks.org/index.pl?node_id=613280

PDL upgrade debian perldl again

2008-10-31T14:16:00.000-07:00

Ok we need a new version of pdl because the one pdl graphics demo in debian sid does not work with perl 5.10.

so go to cpan and get
PDL-2.4.3_03.tar.gz
from chris marshall CHM (search under authors).
also get
PGPLOT-2.20.tar.gz

then install them (you will need gfortran ... and

apt-get install dh-make-perl
apt-get install buildessential
debscripts (debuild)

then follow

http://www.debian-administration.org/articles/78

dh-make-perl PDL-X/
cd PDL-X
debuild
cd ..

then

dpkg -i pdl_2.4.3-7_amd64.deb
dpkg -i libpgplot-perl_2.20-1_amd64.deb

emacs like editors

2008-10-26T21:33:00.000-07:00

mg zile jed joe

Climacs / Drei Common Lisp An Emacs-like editor in Common Lisp,
e3 none
Edwin Scheme Start with: scheme -edwin -edit
EmACT Minimal Lisp Fork of Conroy's MicroEmacs
Ersatz Emacs none A very minimal imitation of GNU Emacs
fe none Small and easy to use folding editor—successor to Origami
GNU Emacs Emacs Lisp
Hemlock CMU Common Lisp S
Jasspa's MicroEmacs custom Also as NanoEmacs with USE=nanoemacs
JED S-Lang
JOE macros Joe's Own Editor
Jove none Jonathan's Own Version of Emacs - a light emacs-like editor without LISP bindings
µEmacs/PK custom MicroEMACS 3.9e with enhancements by Petri Kutvonen
Mg none Micro GNU
Ng none Nihongo micro Gnu emacs, maintained by CJK team
QEmacs none Quick Emacs
SXEmacs Emacs Lisp In XEmacs overlay
XEmacs
zile

http://www.finseth.com/emacs.html

Implementations Available For No Charge

AMIS

Anthony's Editor

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GNU-Emacs, Macintosh port

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JOE

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KEmacs, Kanji Emacs

ME2, Mutt Editor II

Meadow

MG, MicroGNU Emacs

MicroEMACS

MicroEMACS #2

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MicroEMACS #4

MULE, Multi-Lingual Enhancment to Emacs

Nemacs, Nihongo Emacs

NILE

NotGNU

NTEmacs

Ntemacs.exe

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OEmacs

PE, PalEdit

QEmacs

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Tint

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Tovj, Tom's own version of Jove

Treemacs

Xedit

XEmacs, Emacs the next generation

Xyzzy

YR-Emacs

Zile, Zile is lossy Emacs

rm stream to mp3 or wav

2008-09-28T10:14:00.000-07:00

mencoder input_file.rm -ovc frameno -oac mp3lame -of rawaudio -lameopts cbr:br=128 -o output_file.mp3

capture streaming audio

2008-09-28T08:43:00.000-07:00

capture streaming audio

wget http://www.bbc.co.uk/radio/aod/rpms/hitchhikers.ram

cat hitchhikers.ram

rtsp://rmv8.bbc.net.uk/radio4/comedy/thu2300.ra

mplayer -dumpstream rtsp://rmv8.bbc.net.uk/radio4/comedy/thu2300.ra

(Time passes while mplayer writes a file named “stream.dump”.)

Now convert the stream.dump file to pcm/wave:

mplayer -ao pcm stream.dump

(Time passes while mplayer writes a file named “audiodump.wav”.)

Convert that wave file into mp3:

lame --preset standard --tt "Episode 1" --ta "BBC Radio 4" --tl "The Hitchhiker's Guide to the Galaxy, Tertiary Phase" --ty "2004" --tn 1 audiodump.wav episode1.mp3

Hooray! One down side I’ve seen so far: the stream.dump RealAudio file is just under 10Mb, while the mp3 produced by this process is over 37Mb. I should probably use different options when running lame.

copied from: http://www.elsewhere.org/journal/archives/2004/09/25/howto-capture-streaming-audio-for-later/

persistent eth0 or eth1 values problem?? solved on debian-user today!

2008-08-25T16:07:00.000-07:00

the below is thanks to Clifford Hansen in debian-user mail list!

I believe it's doing this because the network card has a different mac address to the previous machine
(albeit virtual)

Have a look in the following file:
% cat /etc/udev/rules.d/z25_persistent-net.rules

You should see lines like the following:
# PCI device 0x14e4:0x1677 (tg3)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="xx:xx:xx:xx:xx:xx", NAME="ethx"

where xx:xx:xx:xx:xx:xx is the mac address and ethx is the device name

just delete all ethx lines and then on reboot eth0 should be eth0 again...

HTH

fixing apt-get upgrade issues

2008-07-26T22:17:00.000-07:00

apt-get install -f
dpkg -i --force-overwrite /var/cache/apt/archives/whatever.deb

crash during apt-get dist-upgrade how to recover

2008-07-26T20:09:00.001-07:00

My nieces were playing (penguin racer i think) on my ppc running debian while it was being upgraded and the machine froze. After turning off I could not reboot into the system.

What to do? I downloaded a ubuntu live ppc disc and I booted into it.

Then I ran a root shell and did
mounted the /dev/hda4 partition which was my root partition.
mount /dev/hda4 /mnt
then

chroot /mnt /bin/bash
then
mount -a
then i still needed to set up a proc directory
so I did
mount -t proc proc /proc
then i did
ifup eth0
and then i did
apt-get update
apt-get upgrade
apt-get install -f
and I was able to reboot into the system!!

Yay for debian!

lvm how to cool

2008-07-23T08:01:00.000-07:00

2) drive 2 setup as lvm!
how?
steps:

fdisk /dev/sda
(use full disk) setup /dev/sda1 type 8e
pvcreate /dev/sda1
sets up the drive to be a physical volume
vgcreate lvm-vol /dev/sda1
sets up the volume group on the drive(s)
(could do vgcreate lvm-vol /dev/sda1 /dev/sdb1)
lvcreate -n 2005-big1 --size 221g lvm-vol
mkfs.ext3 /dev/lvm-vol/2005-big1

lvcreate -n 2005-big0 --size 221g lvm-vol
mkfs.ext3 /dev/lvm-vol/2005-big0

now
a) mount on machine
b) copy data to two partions

now can mount them all in raid-mount-script

how to do adjust and expand size of a partitions

what can do to find out:

vgscan
lvdisplay
pvdisplay

How to expand?

umount /dev/lvm-vol/2005-big0
lvextend -L+100g /dev/lvm-vol/2005-big0
e2fsck -f /dev/lvm-vol/2005-big0
resize2fs /dev/lvm-vol/2005-big0

now we are expanded

Other commands?

lvremove kills contents
lvrename to renam
lvreduce make smaller
lvextend to make bigger

/etc/lvm/archive has list of commands performed on my machine!

How to move a volume group to another machine?
(call the volume group lvm1 say)
1) unmount file system say we have ie the logical volume 2006-data on the volume group lvm1
umount /dev/lvm1/2006-data

2) mark volume group inactive
vgchange -an lvm1

3) export from old system
vgexport lvm1

4) plug into new computer

5) pvscan to identify it

6) vgimport lvm1

7) mount /dev/lvm1/2006-data /mnt

Problems:
You forgot to export from old system?
Then you try vgimport and get an error message

"Volume group "lvm1" is not exported"
??? what to do????

vgchange -ay lvm1
will activate the volume even though was not exported

vgscan will identify that it exists:
then
>lvdisplay
will indicate

--- Logical volume ---
LV Name /dev/lvm1/2006-big0
VG Name lvm1
LV UUID BZCkFH-MjH1-LS5r-giPN-g4GF-yiat-wCGtaC
LV Write Access read/write
LV Status available
# open 0
LV Size 359.00 GB
Current LE 91904

Now you can mount it
mount /dev/lvm1/2006-big0 /home/big0
and you are done.

? how to automatically mount it on the machine.

1. Problem just putting it in the /etc/fstab
it seems not to find it if I just put
/dev/lvm1/2006-big0 /mnt ext3
in the /etc/fstab
I get a hang during boot up.
2. Howrver this works: Create a perl boot script
S99mountme.pl
that does
system("mount /dev/lvm1/2006-big0 /mnt");
runs fine;

? why does the output of the command look like
df -h
/dev/mapper/lvm1-2006--big0 354G 348G 5.8G 99% /mnt

when I did mount /dev/lvm1/2006-big0 /mnt?
what is meaning of /dev/mapper
what is meaning of the extra "-" dashes in the /dev/mapper/ name???

now what to put in the /etc/fstab to get it all to work???

Best sources:
http://www.debian-administration.org/articles/410
http://www.linuxdevcenter.com/lpt/a/6553

software update for etch

2008-07-15T12:36:00.000-07:00

i need to look at the changes for etch

postgresql-8.1
postgresql-client-8.1
libpq-dev

lesstif2-dev
lesstif2

need to make sure that the database is working before running script

debian useful reference

http://panuganty.tripod.com/debiantips/packaging.htm

free dynamic dns services

2008-07-15T09:03:00.000-07:00

Free Dynamic dns services

dyndns.com or dndns.org
http://en.wikipedia.org/wiki/Dynamic_DNS
http://www.dmoz.org/Computers/Internet/Protocols/DNS/DNS_Providers/Dynamic_DNS/
http://www.reverse-dns.net/
http://freedns.afraid.org/
http://www.dynamip.com/

centricty log files

2008-07-10T14:58:00.000-07:00

type platinum\service\logs\CentricyWS-Audit-log.xml|find "changed"
and look for changed to dictated

may have to look at the ones with log.xml.1 amd log.xml.2 and find the cases.

irritating. need perl script to parse log file better.

automating script to do rsync to another machine

2008-07-10T10:36:00.000-07:00

You need to set up ssh without offering a passphrase. How to do this?

go to the

source machine
/home/your-id

ssh-keygen -t rsa

accept the default location .ssh/id_rsa and .ssh/id_rsa.pub
then do (empty passphrase)

and now you can use the generated file .ssh/id_rsa.pub

scp .ssh/id_rsa.pub distal.host.ip.address:/home/yourid/.ssh/authorized_keys

(of course we are coming from only one preimage, otherwise just add line to authorized_keys

wireless issue on debian powerpc

2008-07-04T10:33:00.000-07:00

i started to have difficulty on reboot of power macbook on debian and wireless about b43-cutter
so I updated all including kernel to linux-image-2.6.25 (i had trouble with sbcl kernel bug due
to lack of flag siet up)

so what to do about bcm43 cutter issue in broadcome
http://linuxwireless.org/en/users/Drivers/b43

so i installed latest b43-fwcutte and I ran
/usr/share/b43-fwcutter/install_bcm43xx_fireware.sh

i still get error

loading firmware version 351.126 (2006-07-29 05:54:02)
b43-phy0 warning you are using an old firmware image. support for old firmeware will be removed july 2000.
go to
http://linuxwireless.org/en/users/Drivers/b43
and download latest firmware (version 4)

??

Postgreql full text search support

2008-05-26T21:09:00.000-07:00

Cool look at
http://www.postgresql.org/docs/8.3/static/textsearch.html
gist
http://www.sai.msu.su/~megera/postgres/gist/
http://www.sai.msu.su/~megera/postgres/gist/tsearch/V2/

interesting
http://wiki.docmgr.org/index.php/DocMGR

DocMGR is a complete, web-based Document Management System (DMS). It allows for the storage of any file type, and supports full-text indexing of the most popular document formats. It is available in many different languages and is easy to translate into new languages. DocMGR runs on PHP, the Apache webserver, and Postgresql. It optionally uses tsearch2 for full-text indexing which provides for faster search results and result ranking. DocMGR supports LDAP authentication, the ability to easily add and remove "objects" for storage in the system, document workflow, object subscriptions, WebDAV access, and an ever-growing set of features revolving around content storage.

annotating pdf files creating presentations

2008-05-21T10:29:00.000-07:00

I just watched a friend annotating pdf files with Preview and then
using grabber to take a picture of part of the PDF and put it into his mac
presentation application.

So what is the linux equivalent?

1. what to annotate pdfs?

i notice xournal. someone writes

http://www.g-loaded.eu/2008/05/03/how-to-annotate-pdf-files-in-linux-using-xournal/

The rest of the document has to do with configuring xournal in such a way that it is more convenient to use it to highlight text inside PDF files. Although some of these settings can be set from within xournal’s graphical interface, I recommend editing the configuration file directly: /home/gnot/.xournal/config, since it contains more options than those available in the GUI.

The ruler exists in order to make life easier when you highlight text. It is highly recommended that you enable it for text highlighting:

startup_ruler=true

If highlighting text is your main use of xournal, then you can make it the startup tool as well.

startup_tool=highlighter

The following options make xournal’s window to start maximized and set the initial zoom to 150% respectively.

window_maximize=true
initial_zoom=150

The following options configure the highlighter. You can set the 3 pre-defined levels of thickness and which one will be the default one, set the default color and finally set the opacity (the default opacity level of 50% is just too much).

highlighter_thicknesses=2.83;8.50;19.84
highlighter_thickness=2
highlighter_color=yellow
highlighter_opacity=0.20

Conclusion

No one said that annotating PDF files in Linux is an easy task. I have tried many open source tools for that job, but xournal seems to be the best one at the time of writing.

***************

Cool I will try that today and see how it works.

2. I have been using emacs text application to make presentations. I need to grab screen shots.
what is the equivalent of mac grabber.

xsg i see, xwd, xgrabsc Xscreencap ,

This is really simple. Run gimp (The GNU Image Manipulation Program). Click on Xtns and then Screen Shot, seleccaptscsct whether you want to capture a single window (the Include decorations option means capture the frame and title bar along with the rest of the window) or the whole screen, then click Grab. If you selected the whole screen it will open a new image containing it immediately, else if you chose single window you will have to click on the particular window you want to capture. Edit as necessary and save.

3. he uses spotlight to find files. is there a linux spotlight that searches pdf files???

ubuntu conference 2007 talks

2008-03-25T16:04:00.000-07:00

see talk on clonezilla and virtual machines.

qemu creation of images

2008-03-24T20:56:00.000-07:00

How do you create your images? Do you want to have a BIG file or a SMALL file

qemu-img create debian.img  5G

this creates a large file
which is SPARSE thus is capable of being compressed
via
tar -cjSf debian.tar.bz2 debian.img

which can be moved.

On the other hand you can make a qcow small file to begin with.

qemu-img create debian.img -f qcow 5G

this is a small file.
And can make a copy file to use.

qemu-img create -b debian.img -f qcow stable.ovl

this second is a very tiny copy file, just stores the diffs.

qemu and vmware and kvm and live view

2008-03-23T06:48:00.000-07:00

I have been playing with qemu. I have a vmware machine and now I would like to get a qemu version. When I get a new cpu with virtualization in hardware I can try out kvm as well.

Here is some nice stuff.
http://www.robertpeaslee.com/index.php/converting-a-physical-disk-to-a-virtual-disk-for-free/

He wrote:

I have a Windows XP SP2 installation that I use for work, while my current personal OS of choice is Windows Vista. I only work weekends, so rebooting wasn’t too bothersome initially. Over time it has become more and more of a chore, as I can’t easily switch from one development environment to another without rebooting. I decided it was time to make my work installation a virtual machine.

I had some additional complications that made the process a little non-standard. I originally tried using VMWare’s converter tool, but it would fail at 97% of the creation of the disk. I then tried using a Windows port of the Unix utility ‘dd’ to create a raw image of the disk, but because the Windows volume manager was accessing the disk, dd would give me access errors. Additionally, the VMWare converter doesn’t support converting from a raw image (…grr…), so Qemu’s qemu-img tool would have to be used to convert the raw image to a disk in VMWare’s vmdk format.

The steps to reach our goal aren’t too complicated, and can be replicated by others easily. To do it, I used:

VMWare Workstation
A Linux installation or LiveCD (I used my existing Debian installation, but something like Knoppix would work fine)
Qemu
NTFS-3G (if you plan on writing out to an NTFS partition from Linux, as I did)

I started by booting into my Linux install. Linux only mounts the disks it uses (hint hint, Microsoft) so we can access all sectors of the partition to make a dump of the disk with dd. I first had to mount the partition where I wanted the output file to reside, which uses NTFS:
ntfs-3g /dev/sdb1 /mnt/external
Next, create the image. I did this with the following (substitute your device/partition and output file):
dd if=/dev/hdc3 of=/mnt/external/diskImage/XPSP2.img bs=1024
When that finishes, the file specified with the ‘of’ option in dd will contain a block-by-block exact copy of your partition. However, it is in a raw format - we need it in a format VMWare can read. This is where Qemu comes in. Qemu is distributed with qemu-img, a tool used for creating, manipulating, and converting images. Specifically, our goal is to use qemu-img’s convert functionality to convert from a raw image format to the vmdk format. This is accomplished with:
qemu-img convert -f raw /mnt/external/diskImage/XPSP2.img -O vmdk /mnt/external/diskImage/XPSP2.vmdk
Be prepared to wait. For a 40gb image, this process took roughly 12 hours. Since qemu-img provides no status as to how far it has come, I kept tabs on it just by monitoring the filesize of the output image. This is entirely unnecessary, but if you want to do the same, just open a new terminal and type the following:
while [1 -gt 0 ]; do du -hs /mnt/external/diskImage/XPSP2.vmdk; sleep 10; clear; done
This will just print out the size of the file on your screen so you can watch it grow.

When the process is completed, boot back into Windows (or if you are using Linux as the host, stay put) and create a virtual machine around your new disk image. Don’t forget to remove the original img created with dd, it is a huge waste of disk space :)

[Notes]

This process is really only feasible if you have a lot of disk space. At worst, the disk requirements are greater than 2*P, where P is the partition size of the virtual machine you wish to create. However, qemu-img only writes out actual data, not empty sectors, so your output image will be the size of the used space in the input image. For my conversion, I used over 40gb (input)+15gb (output) of disk space, which was reclaimed with the deletion of the output of dd, and resizing another partition to use the old physical installation’s space.
qemu-img doesn’t support stream input, which is why we can’t pipe dd’s output directly into qemu-img convert. This would have reduced the disk requirements to only the size of the vmdk image, and sped up the process substantially. Bug the Qemu developers to implement this feature :)

then a comment said

u may be able to skip the dd command. Try this command:
qemu-img convert -f raw /dev/hdc3 -O vmdk boot.vmdk

I think this should work just fine. dd is just reading from the disk and qemu-img would not know the difference.

I tested on /dev/hda1 (/boot) and it worked just fine.

t
Further to my previous post - I think you may have stumbled on the single most simple way of converting the system from physical to virtual.

I think the following procedure would work, however I have not had time to test it.

on the machine to be converted (physical machine) nfs mount vmware host drive where you will be putting the virtual disks. Then run the qemu-img convertion from /dev/hda putting the output on the nfs mounted partition. This will be a one step conversion directly to the final location. It might be best to shut down as many processes as possible on the source host.

I’ll give this a go and report back.
ran into the same problems you did. VMWare apparently *really* doesn’t like using images created from individual partitions. The reason isn’t documented, but I believe it is because the partition table for the disk is located at the beginning of the disk, which isn’t being copied. So you are left with a single partition that VMWare believes is the whole disk, and no information as to the partition’s geometry. Additionally, there is no room for an MBR at the beginning of the partition, because it jumps straight into the data section. My suggestion is to use LiveView, which I wrote about here:
http://www.robertpeaslee.com/index.php/raw-image-to-vmdk-the-easy-way/

If that doesn’t work, then… well, I have ideas, but they aren’t fun :) Let me know if LiveView works for you. Good luck mate!
1 March 2008, 5:07 pm

Then look at this

Raw Image to VMDK… the Easy Way

In my last post I chronicled the time consuming process of converting an image produced using the Unix dd utility to a vmware VMDK virtual disk. The process does work, but VMWare will only load it if the image contains a master boot record that still contains the appropriate information when removed from the rest of the system. Additionally, I think it is appropriate to mention again how terribly slow it is. We can circumvent these problems with Live View for Windows, a program developed for forensic work by Carnegie Mellon University.

The process for creating the image with dd is the same as last time, IE, by doing something along the lines of:

dd if=/dev/hdc3 of=/mnt/external/diskImage/XPSP2.img bs=1024
Once that image is generated and you are back in Windows, simply launch the Live View utility and… the rest is pretty self explanatory. Once the dd image is generated, the Live View program takes only a couple minutes to create the new vmdk, configure the virtual machine, and launch it. Sweet, sweet efficiency!

now what is live view?
http://liveview.sourceforge.net/

Live View 0.6 is now available for download.

This version adds support for third party image formats such as EnCase with the use of image mounting software such as Mount Image Pro or Physical Disk Emulator. This release also adds support for the newest versions of Java and VMware, improves the boot preparation process to allow a wider variety of system configurations to boot successfully, and fixes a number of bugs. For more information, see the changelog.

We appreciate the feedback and encourage you to continue to report bugs and make suggestions to help make this tool more useful for everyone. The best way to do this is to post to the forums.

Live View is a Java-based graphical forensics tool that creates a VMware virtual machine out of a raw (dd-style) disk image or physical disk. This allows the forensic examiner to "boot up" the image or disk and gain an interactive, user-level perspective of the environment, all without modifying the underlying image or disk. Because all changes made to the disk are written to a separate file, the examiner can instantly revert all of his or her changes back to the original pristine state of the disk. The end result is that one need not create extra "throw away" copies of the disk or image to create the virtual machine.

Live View is capable of booting

Full disk raw images
Bootable partition raw images
Physical Disks (attached via a USB or Firewire bridge)
Specialized and closed image formats (using 3rd party image mounting software)

Containing the following operating systems

Windows 2003, XP, 2000, NT, Me, 98
Linux (limited support)

Behind the scenes, Live View automates a wide array of technical tasks. Some of these include: resolving hardware conflicts resulting from booting on hardware other than that on which the OS was originally installed; creating a customized MBR for partition-only images; and correctly specifying a virtual disk to match the original image or physical disk.

***************
which is amazing because boot failure due to changing underlying hardware machines is the main issue i have often with windows. you can't just plug a machine into a different machine! now you can

i have not gotten this working myself.
my machine just reboots over and over again.

dyndns

2008-03-09T13:15:00.000-07:00

free dyndns is available at
http://freedns.afraid.org/
reverse-dns.org
or
reverse-dns.net is the target

upgrading to postgresql 8.3 in debian from 7.4

2008-02-18T10:31:00.000-08:00

me:/home/me# pg_dropcluster 8.3 main --stop
me:/home/me# pg_upgradecluster 7.4 main
Checking for users and groups with the same name...
Creating new cluster (configuration: /etc/postgresql/8.3/main, data: /var/lib/postgresql/8.3/main)...
Moving configuration file /var/lib/postgresql/8.3/main/postgresql.conf to /etc/postgresql/8.3/main...
Moving configuration file /var/lib/postgresql/8.3/main/pg_hba.conf to /etc/postgresql/8.3/main...
Moving configuration file /var/lib/postgresql/8.3/main/pg_ident.conf to /etc/postgresql/8.3/main...
Configuring postgresql.conf to use port 5433...
Disabling connections to the old cluster during upgrade...
Disabling connections to the new cluster during upgrade...
Re-enabling connections to the old cluster...
Re-enabling connections to the new cluster...
Creating globals...
Fixing hardcoded library paths for stored procedures...
Upgrading database LTA_FIS...
Analyzing database LTA_FIS...
Fixing hardcoded library paths for stored procedures...
Upgrading database CTNControl...
Analyzing database CTNControl...
Fixing hardcoded library paths for stored procedures...
Upgrading database LTA_IDB...
Analyzing database LTA_IDB...
Fixing hardcoded library paths for stored procedures...
Upgrading database template1...
Analyzing database template1...
Copying old configuration files...
Copying old start.conf...
Stopping target cluster...
Stopping old cluster...
pg_ctl: postmaster does not shut down
Disabling automatic startup of old cluster...
Configuring old cluster to use a different port (5433)...
Starting target cluster on the original port...
WARNING: connection to the database failed, disabling startup checks:
psql: FATAL: the database system is shutting down

Success. Please check that the upgraded cluster works. If it does,
you can remove the old cluster with

pg_dropcluster 7.4 main
wustl@me:~/perlscripts$ ./startctn.pl
both the archive_agent and archive_server processes have started yay!
wustl@me:~/perlscripts$ 170162 DB specific error (PostgreSQL:(null)) in PG_Open
140162 Could not allocate connection handle. dbinit()/dblogin() failed in PG_Open
40192 Bad Database/Table [LTA_IDB/PatientLevel] in IDB_Open
Fatal error during startup
170162 DB specific error (PostgreSQL:(null)) in PG_Open
140162 Could not allocate connection handle. dbinit()/dblogin() failed in PG_Open
40172 Failed to open table ApplicationEntity in function DMAN_Open
bfff4 APP Failed during startup: Could not open control database
120172 DMAN Illegal handle passed to function DMAN_Close
Exiting

xorg.conf hebrew settings

2008-02-17T08:24:00.000-08:00

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc104"
Option "XkbLayout" "us,il"
# Option "XkbCompat" "group_led"
Option "XkbVariant" "lyx"
Option "XkbOptions" "grp:switch,grp:alt_shift_toggle,grp_led:scroll"
EndSection

GNU Emacs and UTF-8 locale

2008-02-13T23:10:00.001-08:00

shamelessly copied from

http://linux.seindal.dk/2004/08/07/gnu-emacs-and-utf-8-locale/

GNU Emacs and UTF-8 locale

I recently wanted to shift to a UTF-8 locale, because I wanted to play with stuff like writing in Arabic, and because it seems to be the road forward.

So I switched and GNU Emacs starts to enter garbage in my buffers. I type “�� “, but Emacs gives me “æøå�� éí�“. Ever so slightly less useful, and less readable too.

I tried fiddling with “Options | Mule | Language Environments” and “Options | Mule | Set Coding System”, but to no avail.

Somewhat deluded I gave up and went back to Latin 1, mostly at least. Every once in a while I tried again, and one day I stumbled over a reference to the Emacs file etc/PROBLEMS, a section on problems with UTF-8 support in GNU Emacs. Unfortunately the section was gone from my copy, but I found it on the net.

The solution to all my problems: add the following lines to ~/.emacs:

(setq locale-coding-system 'utf-8)
(set-terminal-coding-system 'utf-8)
(set-keyboard-coding-system 'utf-8)
(set-selection-coding-system 'utf-8)
(prefer-coding-system 'utf-8)

The problem went away and haven’t been seen since.

BTW, I’m using GNU Emacs 21.3.1, installed from Debian testing and unstable (tried them both).

Tags: Linux

Oviyam a new open source dicom web viewer

2008-02-13T22:19:00.000-08:00

website
http://skshospital.net/oviyam/

downloads

http://skshospital.net/oviyam/oviyam_0.6-src.zip
binary

http://skshospital.net/oviyam/Oviyam-0.6-bin.zip

uses the
framework from

http://script.aculo.us/

and dcm4che which supports wado

precompiled headers .gch?

2008-02-12T22:50:00.000-08:00

i dont know about this yet here is something from gtkmm july 2004

From: "Cristian Adam"
To: gtkmm-list gnome org
Subject: [gtkmm] precompiled headers [revisited]
Date: Wed, 21 Jul 2004 21:47:36 +0200 (MEST)

Take this small gtkmm application:

hello.cpp:
//--------------------------------------------------------
#ifdef USE_PCH
   #include "precompiled.h"
#else
   #include 
#endif

int main(int argc, char* argv[])
{
   Gtk::Main kit(argc, argv);

   Gtk::Window window;

   Gtk::Main::run(window);

   return 0;
}

precompiled.h
//--------------------------------------------------------
#ifndef PRECOMPILED_H
#define PRECOMPILED_H

#include 

#endif


The command to create the precompiled header was:
g++ -o precompiled.h.gch precompiled.h `pkg-config --cflags gtkmm-2.4`

The command to compile hello was:
time g++ -o hello hello.cpp `pkg-config --cflags --libs gtkmm-2.4` -DUSE_PCH

The results are below:

With PCH    Normal
--------------------
0m1.172s    0m6.955s
0m1.168s    0m6.930s
0m1.173s    0m7.154s
--------    --------
0m1.171s    0m7.013s

The compilation was ~6 (six) times faster with precompiled headers!!!

Precompiled headers rulle!!!

Cheers,
Cristi.

From: Christer Palm
To: Cristian Adam
Cc: gtkmm-list gnome org
Subject: Re: [gtkmm] precompiled headers [revisited]
Date: Thu, 22 Jul 2004 01:49:39 +0200

Cristian Adam wrote:

The compilation was ~6 (six) times faster with precompiled headers!!!

Precompiled headers rulle!!!

OK - I'm seeing similar results now (even with more complex examples - about 4 times faster). I guess my problem was that the precompiled header should be named gtkmm.h.gch and not gtkmm.gch. However, I quickly stumbled across GCC bug 13675 (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13675), which was rather easily worked around by using 2 include files like:

A.h:
#ifndef A_INCLUDED
#define A_INCLUDED
#include "B.h"
#endif

B.h:
#include

and then precompiling B.h, while including A.h in my source files. So it seems that it's not quite ready for prime time yet, but I still think it'd be rather interesting to have a build target for gtkmm.h.pch in the standard gtkmm makefile.

--
Christer Palm

and from
http://www.gtkmm.org/docs/gtkmm-2.4/docs/tutorial/html/sec-visual-studio-new-project.html



   The next thing to alter is the stdafx.h precompiled
   header file. At the time of this writing, many Windows programmers are
   familiar with the concept of precompiled headers. However, many Unix
   programmers are not, as precompiled header support was only recently added
   to GCC (in version 3.4) and is still not used in most open source projects.
   Unix programmers may be tempted to just disable precompiled headers
   altogether, but think carefully before doing this. Proper use of precompiled
   headers provides a much improved compile time when using gtkmm, and will
   save you many hours over the course of a project.

emacs read-only buffers

2008-02-07T06:52:00.000-08:00

27.7 Read-Only Buffers

If a buffer is read-only, then you cannot change its contents, although you may change your view of the contents by scrolling and narrowing.

Read-only buffers are used in two kinds of situations:

A buffer visiting a write-protected file is normally read-only.
Here, the purpose is to inform the user that editing the buffer with the aim of saving it in the file may be futile or undesirable. The user who wants to change the buffer text despite this can do so after clearing the read-only flag with C-x C-q.

variable: Buffer-read-onlyThis buffer-local variable specifies whether the buffer is read-only. The buffer is read-only if this variable is non-nil.

gtk-perl and focus; Gtk2::Gdk::Keysyms; asciidoc

2008-02-05T12:44:00.000-08:00

you need to have the focus or even just focus capability for the keyboard entries
to have any affect on a widget.

thus drawingarea needs $drawing->can_focus to capture signals from key_press_event
events;

thus its not enough to do add_events

(also: I am not sure: perhaps if you do -> can focus, you may not even need set_events(["key-press-event]) in the flag .. )

*************************
use Gtk2::Gdk::Keysyms;

this gives you a LOT of flexibility in using keypress events

whereas the a valid flag for the $state= $event->state; flags does not include all of them
thus we have a Control_L or Control_R in Gtk2::Gdk::Keysyms;
as well as Alt_L and Alt_R, they don't exist in the this list of valid state flags....

Invalid flags GdkModifierType value control-l-mask, expecting: shift-mask / GDK_SHIFT_MASK, lock-mask / GDK_LOCK_MASK, control-mask / GDK_CONTROL_MASK, mod1-mask / GDK_MOD1_MASK, mod2-mask / GDK_MOD2_MASK, mod3-mask / GDK_MOD3_MASK, mod4-mask / GDK_MOD4_MASK, mod5-mask / GDK_MOD5_MASK, button1-mask / GDK_BUTTON1_MASK, button2-mask / GDK_BUTTON2_MASK, button3-mask / GDK_BUTTON3_MASK, button4-mask / GDK_BUTTON4_MASK, button5-mask / GDK_BUTTON5_MASK, super-mask / GDK_SUPER_MASK, hyper-mask / GDK_HYPER_MASK, meta-mask / GDK_META_MASK, release-mask / GDK_RELEASE_MASK, modifier-mask / GDK_MODIFIER_MASK a

see man Gtk2::Gdk::Keysyms for more information.

***************************
asciidoc

an interesting python program
it generates man/html/docbook/can generate pdf
from ascii format similar to that used by mjd in txt2slides

Thus is a python program similar to the
marc dominus perl program
txt2slides. tgz which itself uses
txt2html by seth golub which uses a
model of html.pl package of Oscar Nierstrasz
which is similar to CGI.pm module conversions to html.

general idea

this is a header
*************

mutt delete message moves off C-p or C-n moves back to it

2008-02-04T21:46:00.000-08:00

mutt delete message
how to undelete? seems to skip the message with n or p

answer control key!
C-p or C-n moves back to it!

dicom standard where?

2008-01-31T23:04:00.000-08:00

Where are the different VR value representations defined?
PS 3.5 means section 5 - page 24-33 in 2006 then some encoding examples follow
where are general image attributes
PS 3.3 talks about each type of image type
I think CP14 is the supplement that helps to understand data elements.

minicom error message Phonelist garbled. What to do?

2008-01-29T21:02:00.000-08:00

I could never figure out how minicom stores its state information. Where
does it put the phone numbers anyway???? Not it /etc/minicom or such.

Now ordinarily this is not a problem: let minicom worry itself
However today there was a problem.
When I startedup minicom:
error message:
Phonelist garbled:
and lo and behold:
i can't dial my list of numbers -
it apparently doesn't remember any of them!!!

error message:
Phonelist garbled.

I dont even know where minicom keeps them. This is irritating!

Well I did this
strings /usr/bin/minicom

and i looked around to see what it had in there: and looked for Phonelist garbled :)

minicom: cannot setreuid(%d, %d)
%.*s
%s/.dialdir
Error writing to ~/.dialdir!
Manually entered number
Phonelist corrupted
Phonelist garbled (?)
cp %s %s.%hd
Old dialdir copied as %s.%hd
No connection: %s.

so clearly there is something about .dialdir

so now I did
strings .dialdir (it is a binary file :))

and I found my old modem target phone numbers.
so I copied it to a new file minicom-old-dialdir :)
and I re-entered the minicom dialto numbers and
on restarting minicom it has regenerated a new .dialdir.

Sneaky program. Resoureful user!

raid 1 loses a disk how to add back in

2008-01-29T20:41:00.000-08:00

cat /proc/mdstat
Personalities : [raid1]
md6 : active raid1 sda1[1]
488383936 blocks [2/1] [_U]

unused devices:

what to do?
if can find the drive on line
(fdisk -l )
then do
mdadm /dev/md6 -r /dev/sdb1

mdadm /dev/md6 -a /dev/sdb1

to add back in and then monitor with
c
at /proc/mdstat2:/home/wustl# cat /proc/mdstat
Personalities : [raid1]
md6 : active raid1 sdb1[1] sda1[0]
488383936 blocks [2/1] [U_]
[>....................] recovery = 0.0% (279680/488383936) finish=145.4min speed=55936K/sec

unused devices:

postgresql 7.4 obsolte

2008-01-27T07:42:00.000-08:00

installation of postgresql-8,3 will automatically create cluster postgresql-8.3
need to port old to this new.
however the upgrade automatically creates 8.3 cluster which must be dropped
before the transfer of old data to 8.3 version.
thus need to run

exim4 mail configuration files /etc/exim4/exim4.conf.template

2008-01-27T07:17:00.000-08:00

there is sometimes a problem with verizon mail authentication
with the default setup of exim4

in file

/etc/exim4/exim4.conf.template
need to set

AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS='true'

see my posting of may 29 2007
http://debian-user.blogspot.com/2007/05/email-for-single-user-in-debian.html

giant Xsession error logs fill drive. /etc/X11/Xsession

2008-01-27T06:54:00.000-08:00

I had noticed a bug a while ago that there were hidden error log files in my home directory as
large as 25G in size!

the solution to that was
to modify the file

/etc/X11/Xsession

#old contensts were
#exec >>"$ERRFILE" 2>&1
#my modification
errfile="/dev/null"
exec > "$errfile" 2>&1

1. who needs these X error logs anyway?
2. even if we want em, let up should _overwrite them_ not add to the tail!
they can get really large over months!

see this post at
http://forum.soft32.com/linux/Bug-287876-File-HOME-xsession-errors-grows-large-ftopict296772.html

Hi!

This problem just should be fixed. A running Debian system just
kills itself by filling the hard disk with .xsession-errors
files. Unless, of course, the administrator or all users
know how to prevent it.

I fixed it by editing my /etc/X11/Xsession:

Changed this:
exec >>"$ERRFILE" 2>&1

to be like this:
exec >"$ERRFILE" 2>&1

Now the .xsession-errors file is initialized everytime when
a user logs in.

Best regards,
--

-- Harri --

how to keep track of index in perl grep

2008-01-23T22:22:00.000-08:00

well the idea is that
map { express ? $_:() } @list;
is equivalent to
grep exp @list;

so therefore

#!/usr/bin/perl -w
use strict;

my @blug = qw (apple bug orange twist app);

# now create anonymous array reference including the array index

my $i=0;
my @newarray;
foreach (@blug) {
push ( @newarray, [$_,$i] );
$i++;
}

print "now this certainly works \n";
foreach (@newarray) {
print $$_[0] ."\n";
}

my @out= map {$$_[0]=~/app/ ? $_:() } @newarray;

print "and we are done \n";
foreach (@out) {
print $$_[0] ."\n";
}

}

secure add more space to server to store stuff

2008-01-19T23:47:00.000-08:00

ok a standard process.

1 added 2 new drives and moved out old one
have now
mdo-md6 thus 7 raids = 8 sata drives + 1 pata drive
i used up all 8 places on the sata300 cards (4+4).

then when i put in new drives and booted up it did not find /dev/md5 (1 drive in place).
why not because it was now the device /dev/sdh1 while the
/etc/mdadm/mdadm.conf file did not have /dev/sdh1 in the first line.
so when i added it in to fix the line to say
DEVICES /dev/sd[abcdefgh]1
then we were ok and
all the old raids were found and created on bootup.

next we needed to create new raid /dev/md6.
so steps
fdisk -l
found the two new drives that did not have any formating

fdisk /dev/sde
and selected p 1 whole drive type fd
fdisk /dev/sdg
and selected p 1 whole drive type fd

then i did
mdadm -C /dev/md6 --level=1 --raid-devices=2 /dev/sd[eg]1

error device /dev/md6 not found
so i did
mknod b 9 6 /dev/md6

and then i did
mdadm -C /dev/md6 --level=1 --raid-devices=2 /dev/sd[eg]1
and it worked fine to start creating it
then
mkfs.ext3 /dev/md6
and
then we wait for the sync of the raid and the formating to happen

then we do the
creation of the new
/etc/mdadm/madm.conf
we need the new UUID for the raid...

so i did
cp /etc/mdadm/mdadm.conf /root/mdadm.conf

mdadm -E /dev/sde1 |grep UUI >>mdadm.conf

edit the mdadm.conf so that we now use the UUID to build the raid1 for /dev/md6
made sure that the devices line had /dev/sd[abcdefgh]1 so we can build all of them
then I edited the
/etc/init.d/raid_build_mount line to assemble and mount the new raid as
`mount /dev/md6 /home/big6 `
and then we are done.

browse over ssh

2008-01-15T06:53:00.000-08:00

in addition to
ssh -ND destination.ip.com

set up in
about:config in iceweasel
network.proxy.socks_remote_dns to true!

then all dns requests go out over ssh instead of over nework directly.

2008-01-11T12:02:00.000-08:00

build-essentials
libgtk2-dev
freeglut-dev (something like htat
libs needs -lGLU -lGL

for gtlglext

./configure --prefix=/usr

for gtkglextmm
need
libgtkmm-2.4-dev
then
./configure --prefix=/usr
and we are ok

use more space on the drive

2008-01-11T11:27:00.000-08:00

df -h
shows you are not using whole drive
tune2fs -l /dev/md0
shows 5% of space reserved
can do
tune2fs -m 1 /dev/md0 drops it down to 1% wasted space. could do 0.
not on system drive.

Getting Citrix for Carecast working on debian sid amd64

2008-01-06T19:30:00.000-08:00

ok how did i get citrix working on the a debian64 machine.

download the latest citrix application from the website.

http://www.citrix.com/English/SS/downloads/details.asp?dID=2755&downloadID=3323&pID=186

Now citrix uses 32 bit libs not the 64 bit libs you have native so you need to use
ia32-libs
ia32-libs-gtk

lib32gcc1
lib32ncurses5
lib32stdc++6
lib32z1
libc6-i386

i actually don't know which of those. maybe just first one?

so then untar it and run the application

./setupwfc

which installs to
/usr/lib/ICAClient/

/usr/lib/ICAClient$ ldd wfcmgr
linux-gate.so.1 => (0xffffe000)
libXm.so.3 => not available (or something like that...)
libXp.so.6 => /usr/lib32/libXp.so.6 (0xf7d35000)
libXpm.so.4 => /usr/lib32/libXpm.so.4 (0xf7d25000)
libSM.so.6 => /usr/lib32/libSM.so.6 (0xf7d1d000)
libICE.so.6 => /usr/lib32/libICE.so.6 (0xf7d04000)
libXmu.so.6 => /usr/lib32/libXmu.so.6 (0xf7cef000)
libdl.so.2 => /lib32/libdl.so.2 (0xf7ceb000)
libpthread.so.0 => /lib32/libpthread.so.0 (0xf7cd4000)
libc.so.6 => /lib32/libc.so.6 (0xf7b8d000)
libXt.so.6 => /usr/lib32/libXt.so.6 (0xf7b3d000)
libX11.so.6 => /usr/lib32/libX11.so.6 (0xf7a50000)
libXext.so.6 => /usr/lib32/libXext.so.6 (0xf7a42000)
libXau.so.6 => /usr/lib32/libXau.so.6 (0xf7a3f000)
/lib/ld-linux.so.2 (0xf7fa2000)
libXdmcp.so.6 => /usr/lib32/libXdmcp.so.6 (0xf7a3a000)

thus notice that we need
libXm.so.3
(now this is what it shows after i did copied to /usr/lib32/

which as a 32 bit binary
does not seem to exist in debian sid at this moment? or i couldnt find it

so i went to a 32 bit debian sid machine and copied that file and put it in

/usr/lib32/libXm.so.3.0.2
and I did this linking...

ln -s /usr/lib32/libXm.so.3.0.2 /usr/lib32/libXm.so.3

now when i run

ldd wfcmgr

/usr/lib/ICAClient$ ldd wfcmgr
linux-gate.so.1 => (0xffffe000)
libXm.so.3 => /emul/ia32-linux/usr/lib/libXm.so.3 (0xf7d3c000)
libXp.so.6 => /usr/lib32/libXp.so.6 (0xf7d35000)
libXpm.so.4 => /usr/lib32/libXpm.so.4 (0xf7d25000)
libSM.so.6 => /usr/lib32/libSM.so.6 (0xf7d1d000)
libICE.so.6 => /usr/lib32/libICE.so.6 (0xf7d04000)
libXmu.so.6 => /usr/lib32/libXmu.so.6 (0xf7cef000)
libdl.so.2 => /lib32/libdl.so.2 (0xf7ceb000)
libpthread.so.0 => /lib32/libpthread.so.0 (0xf7cd4000)
libc.so.6 => /lib32/libc.so.6 (0xf7b8d000)
libXt.so.6 => /usr/lib32/libXt.so.6 (0xf7b3d000)
libX11.so.6 => /usr/lib32/libX11.so.6 (0xf7a50000)
libXext.so.6 => /usr/lib32/libXext.so.6 (0xf7a42000)
libXau.so.6 => /usr/lib32/libXau.so.6 (0xf7a3f000)
/lib/ld-linux.so.2 (0xf7fa2000)
libXdmcp.so.6 => /usr/lib32/libXdmcp.so.6 (0xf7a3a000)
thus
now it seems to find it, although I certainly did NOT put it in

/emul/ia32-linux/usr/lib/libXm.so.3

I put it in /usr/lib32/libXm.so.3 which is bizarre! But hell it works. who knows what magic?

and I was done.

( thus notice thus we need to have the
/lib32 and /usr/lib32 directories
it looks like the correct ones are /usr/lib32
)

then to run citrix. go to the web site you want to go to
log in to citrix application center
then when you click:

it tells you that :

"you have chosen to open
launch.jsp
which is a ICA file
from
https://remotedestination.whatever.org

open with "Browse for application"

and browse for the file

/usr/lib/ICAClient/wfcmgr

and select that and you will be ok.

then: Go to the Box:

"Citrix presentation server client for linux"

you will see the
Carecast Pool in the middle of box.
and go to the Connections menu
and select Connect
and you will open up a Carecast client

and you can log in!
Good Luck!

where to get audio codecs?

2008-01-05T16:55:00.000-08:00

http://www.debian-multimedia.org/

i am suprised that i didnt have this link here before.

marillat repositories

using pkg-config

2007-12-31T23:19:00.000-08:00

Need to compile a gtkglextmm program?

try

pkg-config gtkglextmm-1.2 --cflags --libs
thus

g++ button.cc `pkg-config gtkglextmm-1.2 --cflags --libs`

where button was the example program in the directory.

works

pogl - perl opengl makes it in to debian libopengl-perl

2007-12-27T08:29:00.000-08:00

I noticed that we dont have to install pogl directly it is now in sid!

dosemu issue

2007-12-16T21:08:00.000-08:00

I had dosemu working with an old application which required a hasp plug on my linux box.

i got it partialy working. the issues are

1) get dosemu working (dont need windows just the dos version)
2) redirect input from hard drive copy of the atm databasee disk so i can use it without loading the disk in cdrom player
3) need to have permission to use the hardware parallel port.
this requires an edit of the global /etc/dosemu/dosemu.conf to access the parallel port
as well as being ROOT user in order to have it work (or setuid or something) see the
readme in the /doc directory of the dosemu which i put in /oldmachine2/me/dosemu-1.2.2

need to play with it more. seem to need to be root and set it up. oops i wonder if the
settings are specific to the workstation
looks like
$_ports= "..."
$_ports= $_ports, " device /dev/lp0 fast range 0x378 0x37a"

cat /proc/ioports |grep parport
if no parport, need to enable it in the bios :).
then match the above line to the to the memmory range....

but please review this.

browse over ssh issues

2007-12-12T11:25:00.001-08:00

i copied this from

http://www.debuntu.org/port-forwarding-and-channel-3-open-failed-connect-failed-Connection-refused
need to think about this....

Ssh Port Forwarding and "channel 3: open failed: connect failed: Connection refused"

ERROR 2013 (HY000): Lost connection to MySQL server during query

channel 3: open failed: connect failed: Connection refused

might find an answer to their problem.

By default and for security reasons, Linux distribution don't let mysqld server accessible from the outside. There is actually 2 ways to achieve this:

binding the service to address 127.0.0.1, this is the default on ubuntu
skipping networking, in that case, only local (non TCP/IP) connections will be allowed, on Unix, connections will be made through a Unix socket. This is the default on debian sarge

In the first solution, you need to add in the [mysqld] section of /etc/mysql/my.cnf the directive:

bind-address = 127.0.0.1

the second solution use:

skip-networking

instead.

While you can connect on a localhost server which skip networking like you could with a server which only listen on 127.0.0.1 address using:

$mysql -u root -p -h localhost

you can not connect to it using an ssh tunnel with port forwarding.
as you will get an error like:

channel 3: open failed: connect failed: Connection refused

on the remote host
and:

ERROR 2013 (HY000): Lost connection to MySQL server during query

on the client host.

So in order to be able to connect to a remote mysql server which is only accessible from localhost, comment the directive:

skip-netwoking

and replace it with

bind-address = 127.0.0.1

This will not make your server less secure (as the service won't be accessible from the outside) and you will be able to access your database server remotely with tools like mysql-query-browser, mysql-administrator using a ssh tunnel.

Hope this helped.

***********************************************
previous thing was

This time, we are going a bit further and will see howto connect to a remote server running ssh in order to be able to access a sql server on the remote LAN.

This system allow to hide the SQL server from the outside. Please, keep in mind that in this example, we are connecting to a MySQL server, but it could be any service running there.

Let's put it on the table. Imagine that we have got a web server which is put under high load, a clever way to soften the effect of the load and in the same way protect our SQL datas from the outside will be to have the HTTP server available to the outside (so it can serve the web pages), and hide our MySQL server from the outside.

This will look like this:

We saw last time, that in order to securely connect to a remote MySQL server running both mysql and ssh, we had to create a tunnel between our desktop and the server where we had to forward port 3307 on our desktop to port 3306 running locally on the remote server by giving the following intruction to ~/.ssh/config:

Localforward 3307 localhost:3306

This time, we want to forward port 3307 on our desktop to port 3306 on the MySQL server (let says it as 192.168.0.3 as IP adress). The only change we have to make to the previous configuration is to change the Localforward instruction by:

Localforward 3307 192.168.0.3:3306

And simply use the same mysqlcc configuration as the one given in the How To Connect to a remote mysql server using mysqlcc and ssh tunneling Tutorial. It is as simple as that :). Here is an overview of the final configuration we have deployed:

People which do not want to use ~/.ssh/config might use the following command:

tester@laptop:~$ssh -L 3307:192.168.0.3:3306 myuser@remotesshserver.com

Now, you can play around with port forwarding, later on, I will show you how to go even further and just do some useless be geeky thing.

cheerio

Panel disappears Sound stops?

2007-12-11T21:09:00.000-08:00

1) Panel sometimes disappears from bottom of KDE. How to get it back?

* run-> panel

panel name is "kicker" significance? think about look into kasbar too

2) Sound stops. Who knows why?

* Run /etc/init.d/alsa-utils start
seems to work

who knows what goes wrong?

Gtk2::GLext install

2007-11-22T11:39:00.000-08:00

Ok, I wanted to have
gtkglext
gtkglextmm
Gtk2::GLext all installed.
let us get latest one of them all
first two use
./configure --prefix=/usr
to get to right debian locations
then for the last guy
need to edit Makefile.PL
to move line
mkdir 'build', 0777;
above the line for the pod that enables compilation
got 2 errors
unrecognized argument in LIBS ignored: '-Wl, --export-dynamic'
unrecognized argument in LIBS ignored: '-pthread'
then did make
make test
make install

mac os upgrade dual boot setup

2007-11-16T08:51:00.000-08:00

Ok I have a dual boot mac g4. i wanted to upgrade to leopard
so i noted that the hard drive partition setup is
/dev/hda1 Apple_partition_map
/dev/hda2 bootstrap yaboot
/dev/hda3 swap
/dev/hda4 Linux / 15.6G
/dev/hda5 Mac OsX 11.8G

so then i booted into new leopard installer disk, wiped out old Tiger, reinstalled from scratch to mac partition
then i did
power on
hold down apple,option, o,f buttons (yes 4 buttons)
then at > prompt type
>boot hd:2,yaboot

here 2 is /dev/hda2 ie yaboot bootstrap partion
then type
>Linux
then

Login to linux system
run as root
fdisk -l
and look to what the macosx partition is

ON my system it changed from /dev/hda5 to /dev/hda6!!! with the new install, wasting a good 120M of space on the drive...

Then edit /etc/yaboot.conf to set
macosx=/dev/hda6 or whatever

then as root run
ybin
this will reinitialize the boot sector to boot to yaboot and
choose Linux as default or Leopard.

Then install OsiriX to MacOsX partition :)

ecb and semantic-cache files

2007-11-16T08:46:00.000-08:00

i may want to get rid of ecb, but while it is on my system:

Emacs and semantic.cache

How can i prevent contaminating each directory with a file semantic-cache?
Set semanticdb-default-save-directory to a directory, by putting the following in your emacs init file (usually .emacs in your home directory):

(setq semanticdb-default-save-directory “~/.semantic”)
(replace ~/.semantic with a different directory, if you wish.)

From http://ecb.sourceforge.net/docs/FAQ.html

browse over ssh

2007-11-03T18:56:00.000-07:00

ssh -ND 8080 you@yourserver.com
sign in
then set up firefox to use socks host : localhost 8080
and you are done.

need to also set up

Set your proxy server to resolve DNS requests instead of your computer; in Firefox's about:config area, set network.proxy.socks_remote_dns = true.

then you cant be traced by your dns queries.....

emacs commands

2007-11-01T07:20:00.000-07:00

1. how to turn on syntax hylighting

M-X font-lock-mode

2. how to indent code?

C-M-\

3. how to comment out code in region? select region then
M-x comment-region
M-x uncomment-region

4. comment on line
M- ; (ie alt-; or esc then ;) creates a comment on the line
M-j then creates another comment line
remove comment on line ??

4. To move the cursor to a specific line:
M-x goto-line
when prompted in the minibuffer
Goto line:

pgplot5

2007-10-26T12:12:00.000-07:00

Just for posterities sake, in case you need to compile pgplot on debian,
the makefile created does not point to the right location for
the includes for
pndriv.o : /usr/include/png.h /usr/include/pngconf.h /usr/include/zlib.h /usr/include/zconf.h

so you correc them to that.
also the problem with tcl and tk is due to the lack of
symlinks
libtk.so -> libtk8.5.so.0
and
libtcl.so -> libtcl8.5.so.0
in
/usr/lib/

once i added them the compilation was fine.

however i then found pgplot in non-free repository so this is not neccesary.

pdl and perl and pgplot5 and dh-install-perl

2007-10-26T11:41:00.000-07:00

To use PDL the perl data language with graphics, you need to

1) install pgplot5 the plotting package ( Fortran! amazing)
which is located in debian non-free.

apt-get install pgplot5

2) install PGPLOT, the cpan module for working with pgplot5
it is currently not in Debian (it fell out a while ago... :( ).

Thus you need to download the PGPLOT module
from CPAN.

But we want a debian package for it!
It will be called libpgplot-perl_2.20-1_amd64.deb

so:

apt-get install dh-install-perl

this will enable us to make a debian package for PGPLOT

then create a directory to work in

mkdir libperl-pgplot
cd libperl-pg-plot
dh-install-perl --cpan PGPLOT
then
dh-install-perl --build PGPLOT-2.20
then
dpkg -i libpgplot-perl_2.20-1_amd64.deb

Of course you will have gotchas along the way :)

When dh-install-perl makes an error in the build,
say because you are missing say g77 or
libextutils-f77-perl,

so you have to delete the debian created directory
rm -rf PGPLOT-2.20/debian
so that you can recompile the binaries.
then you run
dh-install-perl --build PGPLOT-2.20
again.

Of course you could just do
dh-install-perl --install --cpan PGPLOT
which should do it all, but is fun to do it step by step.

minicom setup and acpi questions

2007-08-01T04:52:00.000-07:00

you need the string for the modem

AT&F1E0Q0V1&C1&D2S0=0

for the aceex modem check out later information

http://gentoo-wiki.com/HOWTO_Fix_Common_ACPI_Problems

has page for averatec laptop info for corrected DSDT for it read more about this issue
also more about sleeping
http://acpi.sourceforge.net/dsdt/view.php?manufacturer=Averatec&name=3250HX-01

debian, nvidia driver Linux Kernel 2.6.2x with paravirtualization

2007-06-24T16:07:00.000-07:00

just to remind us
take a look
http://grizach.servebeer.com/nvpatch/

where he discusses what to do.

issue - i would rather not recompile the kernel.
maybe with the next 2.6.22 kernels we will be ok.

at leas,t according to this thread

http://www.nvnews.net/vbulletin/showthread.php?t=93059

saving sound from internet

2007-06-21T15:18:00.000-07:00

vsound will capture sound
Description: Virtual loopback sound recorder and real audio converter
This program allows you to record the output of any standard OSS
program (one that uses /dev/dsp for sound) without having to modify or
recompile the program. It uses sox to convert and save the raw data
into the desired file format and can help to convert real audio files
to some other non-proprietary format.

you can probably use

mplayer -v -dumpstream rtsp://linktoaudofile.rm -dumpfile audio.rm
Replace the rtsp://linktoaudofile.rm with the corresponding link you want to
download.

screenshots in linux

2007-06-21T15:08:00.000-07:00

I believe the Gimp has a pretty straightforward tool for this.
And there is "import" that comes with ImageMagick.
It is a commandline app and works very well, in my experience. The online documentation has a

Try "scrot", it’s extremely small but still provides a lot of functionality.

I use ksnapshot, don't know how big it is, but it does a good job,
allowing to save in a number of different formats. I will try
"scrot", by the way, as I keep taking screenshots quite often.

nice import command from imagemagick

import -frame ~/Images/Screenshots/image_of_the_window_or_frame.jpg

display ~/Images/Screenshots/image_of_the_window_or_frame.jpg

What a great bunch of knowledgable and helpful people - I'd say
Imagemagick and scrot are the handiest - xwd and xwud to display have
the advantage of being on my machine already ( but they do put out HUGE
files). The Kseries suffers from the same problem as Gnome...I don't
run either so aptitude wants to pull in dozens of libraries.
Thanks to everyone!

I'm glad you asked, as I'd been wondering about this too. From the
advice you got I found my answer. I've added the following to my
.fluxbox/keys file, and I'm all set.

Mod4 s :ExecCommand /usr/bin/import -window root ~/screenshots/scrshot$(date +%s).png

gimp. open File -> Acquire -> Screenshot,
choose Single Window or Whole Screen, then click Grab. Now your next
mouse click will capture the window or screen clicked on as an image
in the GIMP. Crop and resize the image as necessary, using the
instructions at http://www.gimp.org/tutorials/Lite_Quickies/#crop

My favorite program for screenshots is ksnapshot. But that might be heavy
for you.

There's always xwd in the xbase-clients package (which is probably
installed already).

Cons:
- It writes in .xwd format. Only. not png or even jpeg. xwd only. But
gimp and others should have no problem reading it.
- Command-line only. No GUI.

Pros:
- You probably have got it installed already
- scriptable from the command line
Not a real issue. You can always use

xwd | convert - screenshot.jpg

What's the point of using xwd, then?

import -window root screenshot.png

(since if convert is installed, then import is installed).

alsa problems

2007-06-21T15:01:00.000-07:00

I have noticed that sound goes silent sometimes. i dont know why
i have been
redoing alsaconf and alsactl store
and speaker-test

what is wrong?

i noticed on debian-user

> Sound works OK from a variety of applications, including alsaplayer,
> realplayer, and mplayer. However, when any application changes a mixer
> setting, sound goes silent until alsa is force-reloaded. Any thoughts?
>
> joehill:/var/log# lsmod

I have the same motherboard and i was facing same problem. after
searching through google and various linux-related site, I found two
steps to solve this problem.

NOTE: install alsa-oss, alsa-utils packages
1. edit: /etc/modprobe.d/alsa-base
Add the following line at the end of the file,
"options snd-hda-intel position-fix=1 model=3stack" (withour
quotes)

After step 1, force-restart alsa module and see if it works or not.

2. edit: /boot/grub/menu.lst
add "noapic" option at the end of the kernel options.
reboot the machine. everything should work fine.

Thank you! This worked fine. There was no need for step 2 -- just the
above fixed the problem.

Andy

**************
now i dont have that mother board
but what is reloading alsa
/etc/init.d/alsa force-reload
i will try that next time.