1. To add new group
# groupadd ubuntugrp
# grep ubuntugrp /etc/group
2. Adding a new group with gid 5000.
# groupadd –g 5000 linuxmintgrp
# grep linuxmintgrp /etc/group
3. Modifying group with gid
# groupmod –g 6000 linuxmintgrp
# grep linuxmintgrp /etc/group
4. Changing the name of a existing group
# groupmod –n linuxmint linuxmintgrp
# grep linuxmint /etc/group
# groupdel linuxmint
# grep linuxmint /etc/group
5. To add users as a Secondary users in a Group.
# useradd Jack
# useradd John
# useradd karen
# gpasswd -M jack,john,karen salesgrp
# grep salesgrp /etc/group
6. Removing user Karen from group salesgrp
# gpasswd –d karen salesgrp
# grep salesgrp /etc/group
7. Adding User Karen to group salesgrp
# gpasswd –a karen salesgrp
# gpasswd salesgrp /etc/group
