Managing Linux users & Access Control List file permissions

Learn how to create, modify, delete and get an info of users and groups, and switch to root user to run commands that need full privileges in Linux.
Learn how to use “setfacl” and “getfacl” commands for setting up and showing Access Control Lists (ACLs).
Learn how to set default ACLs on directories, and how to remove all set ACL permissions or remove an ACL for specific user on a particular file.