Bash Cookbook
Bash Pocket Reference
Classic Shell Scripting
DNS and Bind
Essential System Admininstration
Learning GNU Emacs
Learning the bash Shell
Learning the Vi and VIM Editors
Learning Unix for OS X
lex & yacc
Linux Pocket Guide
Network Troubleshooting Tools
sed & awk
TCP/IP Network Administration
Ten Steps to Linux Survival
Unix In a Nutshell
