The Hardware Hacker
Andrew Bunnie Huang
Serious Cryptography
Jean-Philipee Aumasson
grep Pocket Reference
John Bambenek & Agnieszka Klus
The Car Hacker's Handbook
Craig Smith
Docker: Up & Running
Sean P. Kane & Karl Matthias
Learning the Vi and Vim Editors
Arnold Robbins & Elbert Hannah
Linux in a Nutshell
Ellen Siever & Stephen Figgins & Robert Love & Arnold Robbins