Bash Pocket Reference
Arnold Robbins
Computer Networks
Andrew S. Tanenbaum & David Wetherall
PostgreSQL for Data Architects
Jayadevan Maymala
Statistical Pattern Recognition
Andrew R. Webb & Keith D. Copsey
Software Defined Networking With OpenFlow
Siamak Azodolmolky
Selinux Cookbook
Sven Vermeulen
Python for Unix and Linux System Administration
Noah Gift & Jeremy Jones
Network Security Assessment: Know Your Network
Chris McNab
IPv6 Essentials
Silvia Hagen
Ipv6 Essentials