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

But if you’re a Mac or Linux user and you want to get the most out of your operating system (and your keystrokes), you owe it to yourself to get acquainted with the Unix command line.

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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.