The best-selling UNIX Shells by Example continues to be the only book you need to learn UNIX shell programming. UNIX Shells by Example, Third Edition, adds thorough coverage of the new bash and tcsh shells to the full explanations in Quigley's famous treatment of the C, Bourne, and Korn shells and the awk, sed and grep utilities, making this the most complete UNIX shell programming book available anywhere. Using proven techniques drawn from her acclaimed Silicon Valley UNIX classes, Quigley transforms you into an expert-level shell programmer. You'll learn what the shells are, what they do, and how to program them, as well as how and when to use awk, sed, and grep. Code examples, completely revised and classroom-tested for this edition, explain concepts first band and can serve as the basis for your own projects. UNIX Shells by Example, Third Edition: Explains the C, Bourne, Korn, bash, and tcsh shells in one cohesive way-you'll understand which shell to use and why; Details the essential awk, sed, and grep programming utilities, including their GNU features; Offers proven teaching methods from a top UNIX shell instructor; Provides source code and data files for all examples on the CD-ROM, so you can experiment with them on your own system. UNIX system administrators, application developers, and power users will turn to this book again and again, both as a vital classroom learning tool and as a favorite reference manual.