Hacking: The Art of Exploitation
Jon Erickson
AD&D 5th Edition - Wayfinder's Guide to Eberron (v3)
Wizards of the Coast
Linux System Programming
Robert Love
Foundations of Information Security: A Straightforward Introduction
Jason Andress
Linux in a Nutshell
Ellen Siever & Stephen Figgins & Robert Love & Arnold Robbins
Learning the Vi and Vim Editors
Arnold Robbins & Elbert Hannah
Docker: Up & Running
Sean P. Kane & Karl Matthias
grep Pocket Reference
John Bambenek & Agnieszka Klus