How to find out the version (release) of the ubuntu (debian) installed from command line

On several situation you will need to find out the version of ubuntu (debian) installed in a system you are using.For that open the command terminal and type: lsb_release -a ————————————————————————— The GNU/Linux Advanced Administration: In this ebook “The GNU/Linux Operating System”, the main contents are related with system administration. You will learn how to