Linux Bible
Christopher Negus & Christine Bresnahan
Network Security Through Data Analysis: Building Situational ...
Michael Collins
SELinux System Administration
Sven Vermeulen
Systems Programming: Designing and Developing Distributed Applications
Richard Anthony
Moving to Office 365: Planning and Migration Guide
Matthew Katzer
OpenStack Operations Guide
Tom Fifield & Lorin Hochstein & Jonathan Proulx & Everett Toews & Diane Fleming & Joe Topjian & Anne Gentle
CentOS 6 Linux Server Cookbook
Jonathan Hobson