Use "sudo usermod -a -G example_group example_user" to add a user to a group. To add a user to multiple groups at once, separate groups by commas, like "sudo usermod -a -G group1,group2,group3 example ...

If you need help with Linux, try these outlets. You might not get an answer immediately, but one will come. These are all free to join and enjoy (just watch out for trolls). Linux is about community, ...

How to Create Users and Groups in Linux from the Command Line Your email has been sent Here's a quick guide to adding users and groups, and then how to add users to groups, all from the command line ...