Although it is often simplest to add a new user to a computer running Mac OS X using the built-in graphical interface, you may prefer to do so from a Terminal window, perhaps because you are ...

Sudo lets you run any terminal command as another user — hence "substitute user" — but the default and most common use for it ...

As a MacFixIt reader, you are probably aware that a UNIX engine supplies the power behind Mac OS X's glittering graphical user interface. For most Mac users, however, this is completely irrelevant ...