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

Unix Power Tools: Edition 3

vi Editor Pocket Reference

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

Linux Kernel Development: Edition 3

GDB Pocket Reference: Debugging Quickly & Painlessly with GDB

XDA Developers' Android Hacker's Toolkit: The Complete Guide to Rooting, ROMs and Theming

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

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

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

Learning the Unix Operating System: A Concise Guide for the New User, Edition 5

sed & awk: UNIX Power Tools, Edition 2

Linux All-In-One For Dummies: Edition 7

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

Linux Basics for Hackers: Getting Started with Networking, Scripting, and Security in Kali

Learning the Korn Shell: Unix Programming, Edition 2

Mastering Windows Server 2012 R2

The Ultimate Kali Linux Book: Harness Nmap, Metasploit, Aircrack-ng, and Empire for cutting-edge pentesting, Edition 3