Linux is a multi-user operating system, even if you are the only person using your computer. The most basic of systems has two users: you and the superuser, which is also called root. Every file ...

When you need to enforce password changes for users on Linux machines, the chage command-line tool is a must-have.

Here's a quick guide to adding users and groups, and then how to add users to groups, all from the command line on the Linux platform.