Practical Packet Analysis
Chris Sanders
But how Do it Know?
J. Clark Scott
The Linux Command Line, 2nd Edition
William Shotts
Real-World Bug Hunting
Peter Yaworski
Bash Cookbook
Carl Albing & JP Vossen
Classic Shell Scripting
Arnold Robbins & Nelson H. F. Beebe
Cybersecurity Ops with bash
Paul Troncone & Carl Albing Ph.D.
Effective Awk Programming
Arnold Robbins
grep Pocket Reference
John Bambenek & Agnieszka Klus
Linux Basics for Hackers
OccupyTheWeb
Linux Device Drivers
Jonathan Corbet & Alessandro Rubini & Greg Kroah-Hartman
Linux in a Nutshell
Ellen Siever & Stephen Figgins & Robert Love & Arnold Robbins
Linux Pocket Guide
Daniel J. Barrett
Linux System Programming
Robert Love
Unix Power Tools
Shelley Powers