Linux Utilities Cookbook
James Kent Lewis
Database System Concepts 6th Edition
Abraham Silberschatz & Henry Korth & S. Sudarshan
The Practice of System and Network Administration
Thomas A. Limoncelli & Strata R. Chalup & Christina J. Hogan
The Practice of System Administration (1)
Advanced Penetration Testing for Highly-Secured Environments
Lee Allen
Pro Apache Phoenix: An SQL Driver for HBase
Shakil Akhtar & Ravi Magham
MongoDB Basics
David Hows & Peter Membrey & Eelco Plugge