Learning Perforce SCM
Robert Cowham & Neal Ralph Firth
Red Hat RHCE 8 (EX294) Cert Guide
Sander van Vugt
UNIX and Linux System Administration Handbook 4th edition
Evi Nemeth & Garth Snyder & Trent R. Hein & Ben Whaley
Hacking VoIP: Protocols, Attacks, and Countermeasures
Himanshu Dwivedi
Site Reliability Engineering: How Google Runs Production Systems
Niall Richard Murphy & Chris Jones & Jennifer Petoff & Betsy Beyer