Learning the bash Shell
Cameron Newham
Real-World Bug Hunting
Peter Yaworski
Effective Awk Programming
Arnold Robbins
AD&D 5th Edition - Xanathar's Enemies and Allies
Dungeon Master's Guild Adepts
grep Pocket Reference
John Bambenek & Agnieszka Klus
Linux in a Nutshell
Ellen Siever & Stephen Figgins & Robert Love & Arnold Robbins
Docker: Up & Running
Sean P. Kane & Karl Matthias
Learning the Vi and Vim Editors
Arnold Robbins & Elbert Hannah