Linux / Gentoo / AIX / Solaris
Polishlinux.org distribution comparison: Comparison of Linux distributions.
Old Gentoo wiki backup 1 - English
Old Gentoo wiki backup 2 - German
Gentoo on notebooks: German description about Gentoo powersaving settings.
Parameters to be used in the variable CFLAGS of /etc/make.conf
Software-RAID HowTo: How to create and manage a software-raid in Linux.
How to resize SW-Raid partitions
Gentoo compilation optimization guide: Meaning of the CFLAGS & CXXFLAGS.
LinuxQuestions.org: A very good Linux forum.
Linux für alle: How to connect two Linux boxes through USB (Deutsch).
Homepage of Vladimir Brik: Ready-to-download-images for LiveUSB-sticks (Gentoo).
How to use multimedia keys: A description of how to map keys to programs or events.
Makelinux.net: Linux network administrator guide.
Makelinux.net: Linux sysadmin guide.
Makelinux.net: Linux Kernel module programming guide.
Makelinux.net: Linux filesystem hierarchy.
Makelinux.net: Bash guide for beginners.
Arachnoid: Bash basics.
Makelinux.net: Advanced Bash-scripting guide.
LinuxInsight: Explanation of files contained in /proc/sys/vm (filesystem flush parameters).
programmer Fish: How to install MS Office in Linux using Wine.
Linux App Finder: Listing of Linux applications/programs.
SATA Linux support: Support status of your SATA drivers.
Linux Kernel changelogs are (links continue like that) here and here:
2.6.31
2.6.32
2.6.33
2.6.34
2.6.35