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

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

GDB Pocket Reference: Debugging Quickly & Painlessly with GDB

Learning the bash Shell: Unix Shell Programming, Edition 3

grep Pocket Reference: A Quick Pocket Reference for a Utility Every Unix User Needs

vi Editor Pocket Reference

Linux iptables Pocket Reference: Firewalls, NAT & Accounting

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

The Design and Implementation of the FreeBSD Operating System: Edition 2

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

UNIX and Linux System Administration Handbook: Edition 5

The Practice of System and Network Administration: DevOps and other Best Practices for Enterprise IT, Volume 1, Volume 1, Edition 3

sed & awk: UNIX Power Tools, Edition 2

The Linux Programming Interface: A Linux and UNIX System Programming Handbook

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

Advanced Programming in the UNIX Environment: Edition 3

Learning the vi and Vim Editors: Power and Agility Beyond Just Text Editing, Edition 8

Mastering Ubuntu Server: Gain expertise in the art of deploying, configuring, managing, and troubleshooting Ubuntu Server, Edition 3

Learning the Korn Shell: Unix Programming, Edition 2

Understanding the Linux Kernel: From I/O Ports to Process Management, Edition 3