Linux raspberrypi 3.1.9adafruit+ #8 PREEMPT Wed Aug 1 18:02:42 EDT 2012 armv6l

pi@raspberrypi / $ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux testing/unstable
Release:    testing/unstable
Codename:   n/a

$ uname -a
Linux raspberrypi 3.1.9+ #174 PREEMPT Sun Jul 22 19:04:28 BST 2012 armv6l GNU/Linux

cat /etc/*-release

NAME="Arch Linux"
ID=arch
PRETTY_NAME="Arch Linux"
ANSI_COLOR="0;36"
HOME_URL="https://www.archlinux.org/"
SUPPORT_URL="https://bbs.archlinux.org/"
BUG_REPORT_URL="https://bugs.archlinux.org/"

$ cat /etc/os-release | perl -n -e '/^NAME="([a-zA-Z ]*)"$/ && print "$1n"'
Arch Linux