Unix in a Nutshell, 4th Edition
by
Arnold Robbins
Description: Unix in a Nutshell, 4th Edition provides a comprehensive reference to Unix commands and options, including shell usage, package management, text editing, source code tools, and debugging with GDB. It serves as a detailed guide for users of the system
ISBN: 9780596100292
http://shop.oreilly.com/product/9780596100292.do
And its probaly easier to use