Comment This book should be up-to-date for a few years (Score 4, Informative) 81
Thanks for reviewing this book, which appears to have been published in early Fall of last year. Since it's a book on the commands, editors, and shell programming, it'll probably be valid for years to come. (I've had college instructors require students to purchase texts that were "only" four years old, but already severely outdated by that point.)