Using and Administering Linux: Volume 3
David Both
Using and Administering Linux: Volume 2
Using and Administering Linux: Volume 1
UNIX and Linux System Administration Handbook
Evi Nemeth & Garth Snyder & Trent R. Hein & Ben Whaley
Pro SQL Server on Linux
Bob Ward
Pro Linux System Administration
Dennis Matotek & James Turnbull & Peter Lieverdink
Practical LPIC-3 300
Antonio Vazquez
Practical Linux System Administration
Kenneth Hess
Practical Binary Analysis: Build Your Own Linux Tools for Binary ...
Dennis Andriesse
Linux System Programming
Robert Love
Linux Sound Programming
Jan Newmarch
The Linux Programming Interface
Michael Kerrisk
Linux Pocket Guide
Daniel J. Barrett
The Linux Philosophy for SysAdmins
Linux in a Nutshell
Ellen Siever & Stephen Figgins & Robert Love & Arnold Robbins
Linux Device Drivers, 3rd Edition
Jonathan Corbet & Alessandro Rubini & Greg Kroah-Hartman
The Linux Command Line: A Complete Introduction
William Shotts
Linux Basics for Hackers
OccupyTheWeb
Learning Modern Linux
Michael Hausenblas
Learning Kali Linux
Ric Messier
Learn Windows Subsystem for Linux
Prateek Singh
Introducing ZFS on Linux
Damian Wojsław
Hands-on Booting
Yogesh Babar
Efficient Linux at the Command Line
Beginning Ubuntu for Windows and Mac Users
Nathan Haines
Beginning Modern Unix
Manish Jain
Audio Visualization Using ThMAD
Peter Späth