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3 billet(s) pour janvier 2026

Notes rsh rcp2026/01/21 18:08Jean-Baptiste
Git - Duplication d'un dépôt2026/01/19 10:22Jean-Baptiste
Exemple simple de conf Nagios2026/01/14 10:07Jean-Baptiste

Vim hex

http://www.kevssite.com/2009/04/21/using-vi-as-a-hex-editor

Sometimes I find it useful to switch to hex mode when editing a file in vi. The command for switching is not very obvious so thought I’d share… So, open a file in vi as usual, hit escape and type: 

:%!xxd

to switch into hex mode And when your done hit escape again and type: 

:%!xxd -r

to exit from hex mode. Okay, so this isn’t actaully switching to vi’s ‘hex mode’; vi doesn’t have one. What the above actually does is to stream vi’s buffer through the external program xxd.

2025/03/24 15:06
,

Verrouiller sa session sous GNU/Linux

Voir aussi :

  • loginctl lock-session
  • xdg-screensaver lock

protector de pantalla (xlock) Un protector de pantalla mas ligero que el xscreensaver es xlock

Instalación $ apt-get install xlockmore xautolock $ apt-get install vlock away

xautolock es el protector. xautolock es un demonio para bloquear automáticamente la pantalla $ xautolock -time 5 & Levanta en background bloquear la pantalla si en cinco minutos no hay actividad.

Source : http://petrohs-log.blogspot.fr/2008_12_01_archive.html

vlock

Le nouveau paquet de Jessie (vlock_2.2.2-5) s'est vu retiré le fichier /usr/lib/vlock/modules/new.so suite à un bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=702705

Pour ma part, je ne suis pas confronté à ce bug. Je récupère donc le fichier /usr/lib/vlock/modules/new.so du paquet vlock_2.2.2-3_amd64.deb (Debian Wheezy) 

$ vlock -n
vlock: loading plugin 'new' failed: No such file or directory

Voir :

http://bts.grml.org/grml/issue1342

http://comments.gmane.org/gmane.linux.distributions.grml.devel/154

vlock -san 

wget http://ftp.fr.debian.org/debian/pool/main/v/vlock/vlock_2.2.2-3_amd64.deb
ar x vlock_2.2.2-3_amd64.deb 
tar xf data.tar.gz 
cp ./usr/lib/vlock/modules/new.so /usr/lib/vlock/modules/
chown root:root /usr/lib/vlock/modules/new.so

Verrouillage transparent de l'écran 

xlock -mode blank -geometry 1x1
Un remplacent pour vlock : physlock

http://tuxdiary.com/2014/12/22/vlock/

Verrouillage graphique

Liste : 

xscreensaver-command -lock
2025/03/24 15:06

Remplacer uuencode/uudecode par openssl

Voir aussi :

  • base58

Exemple 

$ echo -n "Test" | openssl base64
VGVzdA==
$ echo "VGVzdA==" |openssl base64 -d
Test

En encore 

cat /usr/share/doc/systemd/LICENSE.LGPL2.1 |head -12 |gzip |openssl base64
H4sIAAsBF1cAA2VRwW7CMAy95yvecZO6ijLtwBFQQUgdQnTsMu2Qti6NVhKUuCD+
fg6MHTYrOdh+7/nJBv7Gcr1DkZdlvsUyX+fbaYHNblas5pCfr8tc/aPc4p18MM5i
nGYJFlT5QfsLsslkohTm7njxZt8xHuaPsSiY2MLCE6F0LZ+1JyzcYBvNIpNgZetU
4SUTiLZfvbEoWcAs4qblDoveOZ9g5gJH+OsUGI2zbPSUPY8yYFdOFfIT+YuzBBNw
JH8wzNSAHWrxA20bNCawN9XABMFWMvsQm4aCgmvBnTB7U5MNhMbVw4GsOBA86k7b
vbF7GI7y1jF037szNalSH2+RKI87Qmt8YHjqSQcZf/pZ1FWeUFAI5LHcFCmwiiIh
+hssiwV9UwhDXQvM+TvpeiVT+bjizVCJQ0mvLpNf/XGCjmxN6sq4V+1wqGScXCn9
VOob+cnrRwACAAA=
(
cat <<EOF
H4sIAAsBF1cAA2VRwW7CMAy95yvecZO6ijLtwBFQQUgdQnTsMu2Qti6NVhKUuCD+
fg6MHTYrOdh+7/nJBv7Gcr1DkZdlvsUyX+fbaYHNblas5pCfr8tc/aPc4p18MM5i
nGYJFlT5QfsLsslkohTm7njxZt8xHuaPsSiY2MLCE6F0LZ+1JyzcYBvNIpNgZetU
4SUTiLZfvbEoWcAs4qblDoveOZ9g5gJH+OsUGI2zbPSUPY8yYFdOFfIT+YuzBBNw
JH8wzNSAHWrxA20bNCawN9XABMFWMvsQm4aCgmvBnTB7U5MNhMbVw4GsOBA86k7b
vbF7GI7y1jF037szNalSH2+RKI87Qmt8YHjqSQcZf/pZ1FWeUFAI5LHcFCmwiiIh
+hssiwV9UwhDXQvM+TvpeiVT+bjizVCJQ0mvLpNf/XGCjmxN6sq4V+1wqGScXCn9
VOob+cnrRwACAAA=
EOF
) | openssl base64 -d | gzip -d > plop.txt

Base64 sans line return : \ Utilisez '-A' Exemple 

cat plop.sh |openssl base64 |tr -d '\n' |openssl base64 -A -d

Alternatives

Base45 :

2025/03/24 15:06
,

Utiliser Git pour vos logos en SVG

Voir http://w.xuv.be/projects/design_with_git

Faire du diffing graphique (oui ! pas en texte) avec Git sur des images vectorielle en SVG

compare.py 

#!/usr/bin/env python
import sys, os
 
inkscape = "inkscape"
 
local = sys.argv[1]
remote = sys.argv[2]
tempdir = "/home/markv/gittemp/"
localpng = tempdir+"local.png"
remotepng = tempdir+"remote.png"
 
if(not (remote.endswith(".svg") and (local != "/dev/null"))):
    os.system("xxdiff %s %s" % (local, remote))
else:
    os.system(inkscape+" "+local+" --export-png="+localpng+" -w600 -h900 -C -bffffff -y1.0")
    os.system(inkscape+" "+remote+" --export-png="+remotepng+" -w600 -h900 -C -bffffff -y1.0")
    os.system("compare "+localpng+" "+remotepng+" - | display")
    os.remove(localpng)
    os.remove(remotepng)

Ajoutez dans votre .gitconfig (adapter le chemin)

~/.gitconfig 

[difftool "compare"]
        cmd = "/home/USER/bin/compare.py $LOCAL $REMOTE - | display"

Puis par exemple 

git difftool -y -t compare
2025/03/24 15:06
, ,

Note commande unzip zip

unzip

$ unzip -l plop.zip

Archive:  plop.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
       39  2015-01-22 17:27   mimetype
      273  2015-01-22 17:27   layout-cache
   921513  2015-01-22 17:27   ObjectReplacements/Obj101
   921513  2015-01-22 17:27   ObjectReplacements/Obj100
    10265  2015-01-22 17:27   ObjectReplacements/Object 1
     1655  2015-01-22 17:27   meta.xml
   233249  2015-01-22 17:27   content.xml
   931840  2015-01-22 17:27   Obj100
   135587  2015-01-22 17:27   styles.xml
      899  2015-01-22 17:27   manifest.rdf
    10111  2015-01-22 17:27   settings.xml
        0  2015-01-22 17:27   Configurations2/toolpanel/
        0  2015-01-22 17:27   Configurations2/statusbar/
        0  2015-01-22 17:27   Configurations2/popupmenu/
        0  2015-01-22 17:27   Configurations2/images/Bitmaps/
        0  2015-01-22 17:27   Configurations2/toolbar/
        0  2015-01-22 17:27   Configurations2/progressbar/
        0  2015-01-22 17:27   Configurations2/floater/
        0  2015-01-22 17:27   Configurations2/accelerator/current.xml
        0  2015-01-22 17:27   Configurations2/menubar/
   931840  2015-01-22 17:27   Obj101
     3765  2015-01-22 17:27   Thumbnails/thumbnail.png
        0  2015-01-22 17:27   Object 1/Configurations2/menubar/
        0  2015-01-22 17:27   Object 1/Configurations2/statusbar/
        0  2015-01-22 17:27   Object 1/Configurations2/toolbar/
        0  2015-01-22 17:27   Object 1/Configurations2/progressbar/
        0  2015-01-22 17:27   Object 1/Configurations2/images/Bitmaps/
        0  2015-01-22 17:27   Object 1/Configurations2/popupmenu/
        0  2015-01-22 17:27   Object 1/Configurations2/accelerator/current.xml
        0  2015-01-22 17:27   Object 1/Configurations2/floater/
        0  2015-01-22 17:27   Object 1/Configurations2/toolpanel/
     3711  2015-01-22 17:27   Object 1/settings.xml
    10400  2015-01-22 17:27   Object 1/content.xml
     7579  2015-01-22 17:27   Object 1/styles.xml
     2455  2015-01-22 17:27   META-INF/manifest.xml
---------                     -------
  4126694                     35 files
$ unzip -Z1 plop.zip
mimetype
layout-cache
ObjectReplacements/Obj101
ObjectReplacements/Obj100
ObjectReplacements/Object 1
meta.xml
content.xml
Obj100
styles.xml
manifest.rdf
settings.xml
Configurations2/toolpanel/
Configurations2/statusbar/
Configurations2/popupmenu/
Configurations2/images/Bitmaps/
Configurations2/toolbar/
Configurations2/progressbar/
Configurations2/floater/
Configurations2/accelerator/current.xml
Configurations2/menubar/
Obj101
Thumbnails/thumbnail.png
Object 1/Configurations2/menubar/
Object 1/Configurations2/statusbar/
Object 1/Configurations2/toolbar/
Object 1/Configurations2/progressbar/
Object 1/Configurations2/images/Bitmaps/
Object 1/Configurations2/popupmenu/
Object 1/Configurations2/accelerator/current.xml
Object 1/Configurations2/floater/
Object 1/Configurations2/toolpanel/
Object 1/settings.xml
Object 1/content.xml
Object 1/styles.xml
META-INF/manifest.xml
Vérifier l'intégrité
unzip -t plop.zip
 
unzip -qt plop.zip
Décompression
unzip plop.zip

zip

Créer une archive / compresser un dossier 

zip -r plop.zip dir1/ dir2/

Comparaison /diff

zipcmp file1.zip file2.zip
pkgdiff -hide-unchanged file1.zip file2.zip
2025/03/24 15:06

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