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.

Jack Wallen walks you through creating new users and groups on Linux and adding those new users to the new groups.

Learn the basics of directory management in Linux using the command line tool.

If you're new to Linux administration, Jack Wallen shows you a skill you'll definitely need to have--creating directories from the command line interface.