User can find the version of Linux with the help of below commands
most of the time you want to know which version of Linux you have installed on your desktop or laptop. So you will learn the Linux version using proc and you can display information from it.
>cat /proc/version >Linux version 3.10.0-693.e17.x86_64 (gcc version 4.8.5 (Red Hat 4.8.5016) Gcc.