Bash Pocket Reference
Arnold Robbins
Effective awk Programming
vi and Vim Editors Pocket Reference
sed & awk, 2nd Edition
Dale Dougherty & Arnold Robbins
Linux in a Nutshell
Ellen Siever & Stephen Figgins & Robert Love & Arnold Robbins
sed & awk Pocket Reference
Classic Shell Scripting
Arnold Robbins & Nelson H. F. Beebe
Learning the vi and Vim Editors
Arnold Robbins & Elbert Hannah & Linda Lamb