Linux command: Show Linux Version

What command I need to type to display my Linux version and other information?

Open shell prompt (or terminal) and type the following command to see your current Linux kernel version:
$ uname -r
2.6.32-23-generic-pae
$ uname -mrs
Linux 2.6.32-23-generic-pae i686
$ uname -a
Sample outpute:

Linux vivek-laptop 2.6.32-23-generic-pae #37-Ubuntu SMP Fri Jun 11 09:26:55 UTC 2010 i686 GNU/Linux

Where,

• 2.6.32-23 - Linux kernel version number
• pae - Kernel type to access more than 4GB ram using 32 bit kernel.
• SMP - Kernel that support multi core and multiple cpus

Find Distribution Version

Type the following command:
$ cat /etc/*release
OR
$ lsb_release -a
Sample outputs:

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04 LTS
Release: 10.04
Codename: lucid