UNIX and Linux System Administration Handbook 4th edition
Evi Nemeth & Garth Snyder & Trent R. Hein & Ben Whaley
The Book of Lost Tales, Part 2
J. R. R. Tolkien
The Book of Lost Tales (2)
Seven Concurrency Models in Seven Weeks: When Threads Unravel
Paul Butcher
Shell Scripting
Steve Parker
Web Penetration Testing With Kali Linux
Joseph Muniz & Aamir Lakhani
Advanced Penetration Testing for Highly-Secured Environments
Lee Allen