Learning the Bash Shell: Unix Shell Programming
Cameron Newham & Bill Rosenblatt
Foundation's Edge
Isaac Asimov
Foundation (4)
Selinux Cookbook
Sven Vermeulen
The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall
Peter N. M. Hansteen
Learning Perforce SCM
Robert Cowham & Neal Ralph Firth