How to check the Linux OS version ?

We can use three simple methods to check the Linux OS version:

1. Using os-release file available in Linux’s etc directory
2. Using lsb_release command
3. Using version file available in Linux’s proc directory

• Using os-release file available in Linux’s etc directory.

We can check the Linux Operating System (OS) info by running the below command

~$ cat /etc/os-release 

• Using lsb_release command.

LSB Stands for Linux Standard Base, we can check the  Linux Operating System (OS) using lsb_release command

$ lsb_release -a

• Using version file available in Linux’s proc directory.

We can use the below command to check the Linux Operating System (OS)

~$ cat /proc/version