O'Reilly
Unix in a Nutshell: A Desktop Quick Reference - Covers GNU/Linux, Mac OS X,and Solaris
Apress
Hands-on Booting: Learn the Boot Process of Linux, Windows, and Unix
Addison-Wesley Professional
Unix Network Programming, Volume 1: The Sockets Networking API
O'Reilly
Mastering FreeBSD and OpenBSD Security: Building, Securing, and Maintaining BSD Systems
Advanced Programming in the UNIX Environment: Advanc Progra UNIX Envir_p3 (Addison-Wesley Professional Computing Series)
41%OFF
Operating System Concepts
Design and Implementation of the FreeBSD Operating System, The
O'Reilly
Practical UNIX and Internet Security: Securing Solaris, Mac OS X, Linux & Free BSD
Tilted Windmill Press
18%OFF
FreeBSD Mastery: Advanced ZFS