How to Prevent & Disable Mac OS X From Sleeping From the Command Line Terminal Application

Posted on in Categories , , , last updated August 31, 2015

I‘m running a process to complete backup and covert images in Mac OS X laptop. I do not wish to disable sleep manually from my OS X power options (Energy Saver). How do I temporarily prevent a Mac from sleeping while my process is still active in Mac OS X Unix operating systems? How can I prevent the system from sleeping temporarily from the command prompt?