Creating user groups

Sometimes, you might have to create user groups for successful installation of certain software. Also, having different user groups, with different privileges is a great way to control user permissions for directories.

Create a new user group and add users to it

1. Log in to your system as the root user:

   localhost$ ssh root@<remote_ip>

2. Use the groupadd command to add a new user group to your system:

   # groupadd newgroup

3. Use the usermod command to add an user to the group:

   # usermod -aG newgroup existingUser

4. You can add an user to multiple groups:

   # usermod -aG newgroup,group1,group2 existingUser

5. You can check which users are in a group using the grep command:

   # grep newgroup /etc/group

   Or, you can do the same in a more elegant way, using the getent command:

   # getent group newgroup