Linux Show Version installed

linux version installed on a different servers.

uname -a
or
/proc/version

When we telnet to any of the Linux server  or machine’s,
the version shows very clearly like :

Red Hat Enterprise Linux ES release 3 (Taroon Update 6)
Kernel 2.4.21-37.ELsmp on an i686
!
On Linux Ubuntu :

Linux mediapc 2.6.32-26-generic #48-Ubuntu SMP Wed
Nov 24 09:00:03 UTC 2010 i686 GNU/Linux