So here, we are :

#!/usr/bin/python 
# Edit DATA and DEST
DATA='/var/www'
DEST='ftp://username:password@ftp.server/backup'

import os
import sys

def backup(b_type='incr'):
    dup_cmd ='nice -n 19 duplicity %s  --volsize 512 --no-encryption --asynchronous-upload ' % (b_type,)
    temp = '%s %s %s' % (dup_cmd,DATA,DEST)
    os.system(temp)

def info():
    dup_cmd='duplicity collection-status  %s' % (DEST)
    os.system(dup_cmd)

def list_files():
    dup_cmd='duplicity list-current-files  %s' % (DEST)
    os.system(dup_cmd)

def clean():
    dup_cmd='duplicity remove-all-but-n-full 1 --force %s' % (DEST)
    os.system(dup_cmd)

def usage():
    print "%s [-incr|-full|-list|-info|-clean]" % sys.argv[0]

if __name__=='__main__':
    if len(sys.argv) > 1:
        if sys.argv[1] == '-incr':
            backup('inc')
        elif sys.argv[1] == '-full':
            backup('full')
        elif sys.argv[1] == '-info':
            info()
        elif sys.argv[1] == '-list':
            list_files()
        elif sys.argv[1] == '-clean':
            clean()
        else:
            usage()
    else:
        usage()

Please note that I disabled the PGP encryption for this backup. Mainly because, I don’t want to deal w/ lost keys when I will need to restore the backup. But this can be done easily. I will post a complete guide if someone ask.

The next step call the script in cron.d for example with something like this : 30  3   *  *  *

Feel happy no more stress with backup ;)

First create a empty image file .. with this command (don’t use dd,  qemu-img is really quicker than dd):

qemu-img create -f raw temp.img 10G

Next simply your image file + the temp one, in a biggest one ..

cat foo.img temp.img > bar.img

You will get a new image file which is 10G bigger than the original one .. Now you can boot your OS, and discover (via cfdisk for example), that your system has a additionnal 10G unused space .. So next step:

• Just create a new partition, and mount it in the normal way
• Boot your kvm OS from a ISO file containing Gparted

I tried the second approach, and used a ubuntu install to boot (using virt-manager, this is really easy to do). And resized the partition to my need .. simply reboot and “tada” :)

Enjoy disk ?

I’m using Gkrellm for a long time now (perhaps 5 or more years). The main issue with Gkrellm is that theme aren’t really fresh anymore. So I tweaked some to feet with my needs.

As you can see on the screen-shot this theme is a transparent one, with a blue and violet krells

You can download it here : gkrellm-themes-invisible-jkx

/ Enjoy the dark side of the desktop :)

This stuff can be repack in a AVI (xivd..) file with some open source tools. Here, a little script to do the hard stuff ;)

You can find the script here : http://svn.pythonfr.org/public/pythonfr/utils/video/mkv2avi.py

#!/usr/bin/python
# Little script to depack Matroska file, and repack them
# in a AVI + subtitle format.

import sys
import os

def message(msg):
    print "=" * 78
    print "= %s" % msg
    print "=" * 78

def usage():
    print "Mastroka repacker script"
    print "  Usage: "+sys.argv[0]+ " filename"

if __name__ == "__main__":
    if len(sys.argv) < 2:
       usage()
    else:
       filename = sys.argv[1]
       basename = filename[:-4]
       message("Unpacking file: %s" % filename)
       os.system("mkvextract tracks %s 1:temp_video.avi 2:temp_audio.ogg 3:%s.srt" % (filename,basename) )

       message("Repacking file: %s.avi" % basename)
       os.system("ffmpeg -i temp_audio.ogg  -i temp_video.avi  -vcodec copy  %s.avi" % (basename) )

       message("Cleaning files")
       os.system("rm temp_video.avi temp_audio.ogg")

/Enjoy Video

ffmpeg -i my_music.mp3 -i in_video.avi -vcodec copy  ouput.avi

You can ever rework on the video after w/ Kino to produce a fade out.

Enjoy video editing on Linux :)

tcpdump -i eth0 ip[9] == 89

And the result:

12:43:48.219432 IP p2b.soif.fr > OSPF-ALL.MCAST.NET: OSPFv2, Hello (1), length: 48
12:43:48.560817 IP wrt.soif.fr > OSPF-ALL.MCAST.NET: OSPFv2, Hello (1), length: 48

Wonderfull no ? :)

To extract a mp3 from a DVD, the easy way is to use transcode

transcode -i /dev/dvd -x dvd -T 1,2,1 -a 0 -y raw -m track22.mp3

But sometimes, this doesn’t works.. in fact I get a random transcode segfault. As mplayer is the perfect video kniffe. I decided to test this w/ mplayer

mplayer -ao pcm dvd://1 -chapter 22

This won’t build a .mp3 but a big wave file, not matter lame is my friend anyways.

PS: The latest transcode should fix the issue, but I’m unable to build it on my debian. libavcodec2-dev is broken. (Wondering why i’m still using this distro … :(

– thanks #mplayer for the help (as usual)

So now, Ion is really fine, and IBM provide a nice doc :)

For example, there is no way to place gkrellm on every workspace, or tell Kmail for stick on workspace 2. Yesterday, while surfing, i discover devilspie.

Example:

<!-- For gkrellm: place on every desktop, and hide in the tasklist -->
<flurb name="gkrellm on all Desktops">
  <matchers>
    <matcher name="DevilsPieMatcherWindowName">
      <property name="application_name" value="gkrellm"/>
    </matcher>
  </matchers>
  <actions>
    <action name="DevilsPieActionSetWorkspace">
      <property name="pinned" value="TRUE"/>
    </action>
    <action name="DevilsPieActionHide">
      <property name="skip_tasklist" value="TRUE"/>
    </action>
  </actions>
</flurb>

<!-- stick Kmail on desktop 4 -->
<flurb>
  <matchers>
    <matcher name="DevilsPieMatcherWindowName">
      <property name="application_name" value="KMail"/>
    </matcher>
  </matchers>
  <actions>
    <action name="DevilsPieActionSetWorkspace">
      <property name="workspace_index" value="4"/>
    </action>
  </actions>
</flurb>

Anyways, i just added a RSS comment Feed to this blog. (No I won’t put the url somewhere since NewsAggregators eat a bunch of bandwith only to see nobody post, i will only give it to friends .. :)

But, this is not the main stuff, while browsing this RSS feed i discover one interesting comment about Mutt and IMAP cache. I now use courier-cone (no-url-yet) and it pretty cool and happy w/ IMAP. I like the IMAP Adressbook system which is really pleasant to use. Anyway check out this post if you want to test the new imap cache for mutt, and thanks Glanzmann for the post :)

For lazy readers the patch is here