Time Management for System Administrators
Thomas A. Limoncelli
OpenVZ Essentials
Mark Furman
Mastering Python Regular Expressions
Félix López & Victor Romero
Unix and Linux System Administration Handbook 5th Edition
Evi Nemeth & Garth Snyder & Ben Whaley & Trent Hein
A World Without Time: The Forgotten Legacy of Godel and Einstein
Palle Yourgrau