How to view/display Linux version

I came across a lot of situations where I needed to know the exact version of the OS I was using. Mainly, because of the dependencies involved (Python, PHP, MySQL, etc).

So, open up a terminal and use the following commands in order to view the exact version of your Linux operating system.

Ubuntu

lsb_release -d

lsb_release -a

CentOS

rpm -q centos-release

hostnamectl

Red Hat Fedora

rpm -q fedora-release-common

rpm -q fedora-release-workstation

cat /etc/redhat-release

cat /etc/os-release

OpenSuse

cat /etc/os-release