Practical Linux Infrastructure
Syed Ali
Linux Utilities Cookbook
James Kent Lewis
Mostly Harmless
Douglas Adams
The Hitchhiker's Guide to the Galaxy (5)
Apache Maven Dependency Management
Jonathan Lalou
Mathematical Logic for Computer Science
Mordechai Ben-Ari
An Introduction to Optimization
Edwin K. P. Chong & Stanislaw H. Zak
Logic and Discrete Mathematics: A Concise Introduction
Willem Conradie & Valentin Goranko
Theory of Computation
George Tourlakis