Birmingham mumbai

[
 38 
]
•  Managing groups
•  Managing passwords and password policies
• 
Configuring administrator access with 
sudo
• 
Setting permissions on files and directories
In the first section, we have a quick discussion of the nature of managing users.
Understanding users and groups
When it comes to a server, users
 are very important—without users to serve, then 
there's no real need for a server in the first place. The subject of user management 
itself within the world of IT is in and of itself quite vast. Entire books have been 
written on individual methods of authentication, and entire technologies (such as