# release files (guess the os distribution)
# from http://linuxmafia.com/faq/Admin/release-files.html
Annvix: /etc/annvix-release
Arch Linux: /etc/arch-release
Arklinux: /etc/arklinux-release
Aurox Linux: /etc/aurox-release
BlackCat: /etc/blackcat-release
Cobalt: /etc/cobalt-release
Conectiva: /etc/conectiva-release
Debian: /etc/debian_version, /etc/debian_release (rare)
Fedora Core: /etc/fedora-release
Gentoo Linux: /etc/gentoo-release
Immunix: /etc/immunix-release
Knoppix: knoppix_version
Linux-From-Scratch: /etc/lfs-release
Linux-PPC: /etc/linuxppc-release
Mandrake: /etc/mandrake-release
Mandriva/Mandrake Linux: /etc/mandriva-release, /etc/mandrake-release, /etc/mandakelinux-release
MkLinux: /etc/mklinux-release
Novell Linux Desktop: /etc/nld-release
PLD Linux: /etc/pld-release
Red Hat: /etc/redhat-release, /etc/redhat_version (rare)
Slackware: /etc/slackware-version, /etc/slackware-release (rare)
SME Server (Formerly E-Smith): /etc/e-smith-release
Solaris SPARC: /etc/release
Sun JDS: /etc/sun-release
SUSE Linux: /etc/SuSE-release, /etc/novell-release
SUSE Linux ES9: /etc/sles-release
Tiny Sofa: /etc/tinysofa-release
TurboLinux: /etc/turbolinux-release
Ubuntu Linux: /etc/lsb-release
UltraPenguin: /etc/ultrapenguin-release
UnitedLinux: /etc/UnitedLinux-release (covers SUSE SLES8)
VA-Linux/RH-VALE: /etc/va-release
Yellow Dog: /etc/yellowdog-release

# own collection
Angstrom: /etc/angstrom-version