[CentOS] how to check the version of centos

Thu Apr 3 14:46:18 UTC 2008
Greg Bailey <gbailey at lxpro.com>

Mail Administrator wrote:
> Thanks guys for the quick reply
> btw cat /etc/redhat-release gives me
> CentOS release 5 (Final)
> so as per the FAQ guess its uptodate
> thnks again
> regards
> simon

Interesting that this seems to deviate from upstream.  Checking an 
updated Red Hat Enterprise Linux 5 box, I get:

# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.1 (Tikanga)

Does anyone know what upstream does with the 5.1.z updates?  Does 
/etc/redhat-release show "5.1.z" or something?