I am using Raspbian Wheezy Version: September 2014. I would like to create a script or a one-liner if possible, to add a new user silently/unattendedly. I want this user to have root privileges. Is this possible to do?
From what I could gather, I need one command to add the user, one command to add the user to the root group, and I also need to modify a file. Can all this be done automatically/silently?