How to check Version on CentOS/Redhat

In this post, i will share the quick steps on how to check linux CentOS version. This steps may working on any version of CentOS and Redhat Enterprise linux (RHEL) server. CentOS versions can easily be checked with some simple commands. There are two common command to check linux version :
Method 1:Execute the issue command :

# cat /etc/issue

Method 2:Execute redhat-release command :

cat /etc/redhat-release
or

cat /etc/centos-release

or

cat /etc/*release*