The next /etc file we want to look at is the group file, but if you do not understand how and why Linux uses groups you would not realize the usefulness of the group file, so let’s cover groups first
Most Operating Systems use the concept of groups to allow access rights to be distributed by job description or department rather than by person
This makes it easier for the System Administrator to Manager Access Rights
Group 1
Group 3
Group 2
Accounting
Engineering
Sales