You can also manage group with the groupadd, and groupdel commands.these command line operation let you quickly manage a group from a terminal window.
With the groupadd command,you can create new groups.when you add a group to the system,the system places the group`s name in the /etc/group file and gives it a group ID number.if shadow security is in place,changes are made to the /etc/gshadow file.
groupass command only creates the group category.you need to add users to the group individually.in the following example,the groupadd command creates the developer group.
You can change the name of a group or its ID using the groupmod command.Enter groupmod -g with the new ID number and the group name.to change the name of a group,you use the -n option. enter groupmod -n with the new name of the group,followed by the current name.in the next example,the developer group has its name changed to distribution.
#groupmod -n distribution developer
You can delete a group with groupdel command.In the next example,the developer group is deleted.