Adding groups

Let's create a group named cartoon. To do that, you need to run the command groupadd cartoon:

root@ubuntu-linux:~# groupadd cartoon

Notice that a new line with the group information will be added to the end of the file /etc/group:

root@ubuntu-linux:~# tail -n 1 /etc/group 
cartoon:x:1009:

Notice that the group cartoon currently has no members, and that's why the fourth field is currently empty.

Let's create another group named developers, but this time, we will specify a GID of 888:

root@ubuntu-linux:~# groupadd --gid 888 developers

Let's check the developers group entry in /etc/group:

root@ubuntu-linux:~# tail -n 1 /etc/group 
developers:x:888:

And it looks just like we expect it to be. Cool!