LINUX - CHECK OS VERSION IN COMMAND LINE

The procedure to find os name and version on Linux:

Open the terminal application (bash shell)

For remote server login using the ssh: ssh user@server-name
Type any one of the following command to find os name and version in Linux:

$ cat /etc/os-release
$ lsb_release -a
$ hostnamectl

Type the following command to find Linux kernel version:

$ uname -r

Another option is to type the following cat/more or less:

$ cat /proc/version