powdered mind

linux console resolution (i915)

2010-02-23T08:36:00.003+01:00

The uvesa-fb approach to console resolution switching is obsolete and depreciated.

Now something called KMS (Kernel ModeSetting) is used.
Requirements:
1. >=kernel-2.6.31
2. >=xorg-server-1.6
3. >=xf86-video-intel-2.8.0.

Steps:
1. Device Drivers ---> Graphics support ---> Support for frame buffer devices; disalbe framebuffer support like intelfb, vesafb or uvesafb

2. Device Drivers ---> Graphics support ---> ... <*> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support) ---> <*> Intel 830M, 845G, 852GM, 855GM, 865G (i915 driver) ---> <*> i915 driver [*] Enable modesetting on intel by default.

More information: http://en.gentoo-wiki.com/wiki/Intel_GMA

merging many pdf files into one.

2009-05-11T00:22:00.002+02:00

Given input files: 0001.pdf, 0002.pdf, 0003.pdf.
Output file: output.pdf
Requirements: GhostScript

gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=output.pdf -dBATCH 0001.pdf 0002.pdf 0003.pdf

ZSH on rootnode 2009-04-24T15:07:00.006+02:00 Howto use zsh on rootnode, and get almost all of benefits that are preconfigured for bash usage on korn.rootnode.net. % chsh -s /usr/bin/zsh create a ~/.zshrc file with the following contents: PATH="/adm/szatan/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games" if [ -d "$HOME/tmp" ] ; then TMPDIR="$HOME/tmp" TEMP="$TMPDIR" TMP="$TMPDIR" fi JAVA_HOME="/usr/lib/jvm/java-1.5.0-sun-1.5.0.10" TMOUT=3600 JAVA_OPTS="$JAVA_OPTS -Xms128m -Xmx255m" [ -d "$HOME/bin" ] && PATH="$HOME/bin:$PATH" [ -d "$HOME/man" ] && MANPATH="$HOME/bin:$MANPATH" MAIL=~/Maildir EDITOR="/usr/bin/vim" [ ! -f "$HOME/.nosplash" ] && /adm/szatan/bin/splash [ ! -f "$HOME/.nomotd" ] && cat /etc/motd.rootnode automounting ftpfs using curlftpfs and autofs 2008-05-09T13:57:00.003+02:00 Software requirements: working autofs instalation fuse curlftpfs Procedure: create /sbin/mount.curl containing: #!/bin/bash curlftpfs $1 $2 -o allow_other,disable_eprt create /sbin/umount.curl containing: #!/bin/bash fusermount -u $1 make both created *.curl files executable add /mnt/ftp /etc/autofs/auto.ftp --ghost to /etc/autofs/auto.master create /etc/autofs/auto.ftp file containing: myFTP -fstype=curl,allow_other :ftp\://USER\:PASSWORD\@MACHINE/ Et voila! cd /mnt/ftp/myFTP; ls password management in python 2008-04-16T15:49:00.008+02:00 Problem: How to, change existing password of USER using python. Solution: import crypt,random from subprocess import Popen, PIPE DES_SALT = list('./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz') SALT = "%s%s"%(random.choice(DES_SALT),random.choice(DES_SALT)) DESHASH=crypt.crypt(PASS,SALT) inout=Popen(["/usr/sbin/usermod","--password",DESHASH,USER],stdin=PIPE, stdout=PIPE,stderr=PIPE).communicate() Instead of Popen one could write directly to shadow file apache - redirecting main page to current date 2008-04-16T11:51:00.003+02:00 Problem: Automatic redirection of main page request to current year and month. Automatic fixing of broken date links (YEARMONTH to YEAR/MONTH/) Solution: Use mod_rewrite magic :D RewriteEngine on RewriteRule ^/([0-9]{4})([0-9]{2})$ http://%{HTTP_HOST}/$1/$2/ [R,L] RewriteRule ^/$ http://%{HTTP_HOST}/%{TIME_YEAR}/%{TIME_MON}/ [R,L] (1.) enables RewriteEngine (2.) matches http://host.domain/dddddd and transforms it into http://host.domain/dddd/dd where $1 is the first match - a group of four digits ([0-9]{4}) and $2 is the second match (group of 2 digits) (3.) redirects main page (http://host.domain/) to http://host.domain/month/year/