Learn about permissions in the UNIX and Linux environment.
Learn all about UNIX / Linux permissions and how to manipulate them to achieve security.
Learn the three types of file accession: read, write and execute.
Learn how to change read, write, and execute with chmod on the Linux Command Line.
Learn how to use umask to set default file permission settings.
Learn how to grant file access to other people with chown.
Learn how to switch users and run administrative tasks on the Linux command line with the sudo and su.