Unix Systems
Start with high-confidence unix systems books, then narrow by subgenre or adjacent topics.
Start Here
More Unix Systems Books
The AWK Programming Language
Programming With POSIX Threads
Cross-platform Development in C++
Linux Phrasebook
Practice of System and Network Administration, the
Design and Implementation of the FreeBSD Operating System, the
Unix and Linux
In the Beginning...was the Command Line
Professional Xen Virtualization
Mastering Unix Shell Scripting
Professional Linux Kernel Architecture
Opensolaris Bible
Learning the Unix Operating System
Practical UNIX and Internet Security
Understanding the Linux Kernel
Classic Shell Scripting
Mastering FreeBSD and OpenBSD Security
Windows XP in a Nutshell
Unix in a Nutshell
Ubuntu Hacks
Linux Kernel Development
Learning Modern Linux
Linux Essentials
Linux Bible
LPI Linux Essentials Study Guide
Linux Command Line and Shell Scripting Bible
Linux All-in-one for Dummies
Macintosh Terminal Pocket Guide
Bash Pocket Reference
Learning Unix for OS X
Bash Cookbook
Bash Idioms