"If you read my article “Get to know Linux: File permissions” you know that it’s possible, out of the box, to control who can access a file and what they can do with it. This helps to make Linux a fairly secure system. But did you know you can take even further control of that system with the help of Access Control Lists? Access Control Lists allow you to provide different levels of access to files and folders. Say, for instance, user jlwallen creates a file but doesn’t want to allow anyone to do anything with this file but he and another user, wookie (even though there are other users that belong to the group jlwallen). ACL can handle this task.
"In this article you will learn how to install and use ACL to further enchance your file permissions on a Linux system."
