Introduction

• Linux is a multi-User system, allowing many Users to work on the same machine at once.
• As such, we need mechanisms to separate between Users - so one User won't stumble on the work of another User.
• And then we will need mechanisms which will allow Users to share their work.
• Users, Processes and Permissions are the way to handle that.
• Note: during this lecture, we will show examples on a live system. The examples are NOT detailed in the slides.

Once again, remember what sets off "the hitch-hikers guide to the galaxy" from "the encyclopedia Galactica": It has, written on its top, the phrase: Don't Panic!

Originally written by guy keren