Find out your linux version number

If you forgot your linux version number, if should be easy for you to find it out.

SUSE Linux:

~> cat /etc/SuSE-release
SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 1

You may also use another command:
~> cat /etc/issue
Welcome to SUSE Linux Enterprise Server 11 SP1  (x86_64) - Kernel \r (\l).

To print out linux kernel version, you can execute the following command:

~> uname -a
Linux yourserver 2.6.32.54-0.3-default #1 SMP 2012-01-27 17:38:56 +0100 x86_64 x86_64 x86_64 GNU/Linux