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 ...
Managing user groups on Linux systems is easy, but the commands can be more flexible than you might be aware. User groups play an important role on Linux systems. They provide an easy way for a select ...