A Brief History of Time
Stephen Hawking
CentOS 6 Linux Server Cookbook
Jonathan Hobson
Linux With Operating System Concepts
Richard Fox
The DevOps 2.5 Toolkit
Viktor Farcic
Logic and Discrete Mathematics: A Concise Introduction
Willem Conradie & Valentin Goranko
An Introduction to Optimization
Edwin K. P. Chong & Stanislaw H. Zak
Mathematical Logic for Computer Science
Mordechai Ben-Ari
Theory of Computation
George Tourlakis