How to check OS version in Linux command line

Check OS version in Linux:
The procedure to find OS name and version on Linux:

Open the terminal application (bash shell)
Type any one of the following command to find OS name and version in Linux:

cat /etc/issue
more /etc/issue

#Linux is a free and open source operating system. There are many variants of Linux out there. They are typically called Linux distribution. Suse, OpenSUSE, Debian, Ubuntu, CentOS, Arch, Fedora, RHEL all are common Linux distribution names. Knowing your os version and name can be very useful for security patches.

#TheSAPBasis
#SUSE-Linux