Effective Awk Programming
Arnold Robbins
Attacking Network Protocols
James Forshaw
The Linux Command Line, 2nd Edition
William Shotts
Eberron: Rising from the Last War (D&D Campaign Setting and ...
Dungeons & Dragons
Unix Power Tools
Shelley Powers
Linux System Programming
Robert Love
Linux Pocket Guide
Daniel J. Barrett
Linux in a Nutshell
Ellen Siever & Stephen Figgins & Robert Love & Arnold Robbins
Linux Device Drivers
Jonathan Corbet & Alessandro Rubini & Greg Kroah-Hartman
Linux Basics for Hackers
OccupyTheWeb
grep Pocket Reference
John Bambenek & Agnieszka Klus
Cybersecurity Ops with bash
Paul Troncone & Carl Albing Ph.D.
Classic Shell Scripting
Arnold Robbins & Nelson H. F. Beebe
Bash Cookbook
Carl Albing & JP Vossen