Effective awk Programming: Universal Text Processing and Pattern Matching, Edition 4

Learning the bash Shell: Unix Shell Programming, Edition 3

sed and awk Pocket Reference: Text Processing with Regular Expressions, Edition 2

bash Cookbook: Solutions and Examples for bash Users, Edition 2

GDB Pocket Reference: Debugging Quickly & Painlessly with GDB

Linux iptables Pocket Reference: Firewalls, NAT & Accounting

vi Editor Pocket Reference

Unix Power Tools: Edition 3

vi and Vim Editors Pocket Reference: Support for every text editing task, Edition 2

SSH, The Secure Shell: The Definitive Guide: The Definitive Guide, Edition 2

Linux Application Development by Example: The Fundamental APIs, Edition 2

Learning GNU Emacs: A Guide to Unix Text Processing, Edition 3

Free to Make: How the Maker Movement is Changing Our Schools, Our Jobs, and Our Minds

Linux Kernel Development: Edition 3

Bash Pocket Reference: Help for Power Users and Sys Admins, Edition 2

Unix in a Nutshell: A Desktop Quick Reference - Covers GNU/Linux, Mac OS X,and Solaris, Edition 4

How Linux Works, 3rd Edition: What Every Superuser Should Know

Classic Shell Scripting: Hidden Commands that Unlock the Power of Unix