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 ...

The context menu is a great time-saving feature. Most modern operating systems, such as Windows, use context menus as a way of conveniently offering various options to a user without requiring them to ...