UNIX and Linux System Administration Handbook 4th edition
Evi Nemeth & Garth Snyder & Trent R. Hein & Ben Whaley
MySQL Cookbook: Solutions for Database Developers and Administrators
Paul Dubois
Building DMZs for Enterprise Networks
Robert J. Shimonski & Will Schmied & V Chang & Thomas W. Shinder
The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall
Peter N. M. Hansteen
PostgreSQL 9.0 High Performance
Gregory Smith
Moving to Office 365: Planning and Migration Guide
Matthew Katzer