UNIX is a family of operating systems. UNIX Shell is common in text-based or command-line UNIX programs. The commands of UNIX shell are compatible with all brands of UNIX, including Linux. This Virtual Training Company tutorial teaches the fundamentals of UNIX Shell even if you have no prior knowledge of UNIX or UNIX Shell commands. Author Mark Virtue helps you get a better understanding thorough demonstrations of processes such as logging in, copying files, combining programs, using telnet, and more. To get started, simply click one of the topics below.