Linux Scripting and Programming

Linux Fundamentals

Conquering the Command Line … Unix and Linux Commands for Developers
Advanced Bash-Scripting Guide … An in-depth exploration of the art of shell scripting
“This tutorial assumes no previous knowledge of scripting or programming, but progresses rapidly toward an intermediate/advanced level of instruction . . . all the while sneaking in little nuggets of UNIX® wisdom and lore. It serves as a textbook, a manual for self-study, and as a reference and source of knowledge on shell scripting techniques. The exercises and heavily-commented examples invite active reader participation, under the premise that the only way to really learn scripting is to write scripts.”

Special characters … Shell characters to do special things using commands
Better Bash Scripting in 15 Minutes
“The tips and tricks below originally appeared as one of Google's 'Testing on the Toilet' (TOTT) episodes. This is a revised and augmented version”

Meld … Find / Study / Edit changes in Scripting & Coding
Meld is a visual diff and merge tool that helps compare files, directories, and version controlled projects. It provides two- and three-way comparison of both files and directories, and supports many popular version control systems.