Ubuntu Linux: Add a User To Group

In Ubuntu Linux, you can add a user to a group using the usermod command. Here’s an example:

1. First, determine the name of the user and the group you want to add the user to. For example, let’s say the user’s name is user1 and the group name is group1.
2. Use the following command to add the user to the group:
   sudo usermod -a -G group1 user1


   The -a option specifies that the user should be appended to the group, and the -G option specifies the group name.

3. Log out and log back in for the changes to take effect. You can also use the following command to activate the changes without logging out:
   newgrp group1

4. You can verify that the user has been added to the group by using the following command:
   groups user1


This will list all the groups the user belongs to.