How to Check Your Installed Linux Version

If you are wondering that what is your currently installed linux version, follow the steps given below to know your current linux version.

Ubuntu/Debian:

# cat /etc/issue

Result:

Ubuntu 10.04.2 LTS

Type: lsb_release -a and press Enter.

# lsb_release -a

Result:

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04.2 LTS
Release: 10.04
Codename: lucid

CentOS/RedHat:

# cat /etc/redhat-release

Result:

CentOS release 6.3 (Final)