‘mac os terminal, Creating New Users’ http://www.maclife.com/article/columns/terminal_101_creating_new_users
Every Monday, we’ll show you how to do something new and simple with Apple’s built-in command line application. You don’t need any fancy software, or a knowledge of coding to do any of these. All you need is a keyboard to type ‘em out!
Adding users through the GUI in OS X is an easy process, but sometimes, you may just need to quickly create an SSH user, or a user that is allowed to SFTP or FTP into the system.