Discover all you can do with UNIX Shell Programming, the easy way -- and get exclusive access to an up-to-the-minute Web-based training site! Learn what shell programming is good for -- and how to choose the right shell for your needs. Learn how to customize the command line; build basic scripts; execute internal and external commands; use token splitting, environment and shell variables. Master techniques for parameter and command substitution; filename expansion and pattern matching; I/O; testing; expression evaluation, and much more. The accompanying Web site includes a Virtual Study Lounge where you can meet authors and other users; interactive testing modules that offer instant feedback; bonus projects and solutions; updates, new info, feedback areas and more.