Group is a way to organize and administer user accounts in Linux. Groups are used to collectively assign rights and permissions to multiple user accounts.
You will need super user or root privileges to add a group to the Ubuntu server. Follow these steps to create a group:
Step 1 : Enter the following command to add a new group
# sudo addgroup <group> sudo addgroup groupdev
Step 2 : Enter your password to complete addgroup with root privileges.