This guide will teach you how to use Ubuntu Linux the way real professionals do, that is, using the command line. You will be able to use more than 1000 commands and get all the necessary software - from system utilities that track the operation of your PC and its security, to programs for working on the network and limiting access. The book provides indispensable knowledge and skills for using and administering desktops and servers running Ubuntu, Debian, KNOPPIX and other Linux distributions.