Shell

Bash

• Bash Reference Manual
  • Builtin Commands
  • Shell variables: Bourne, Bash
  • Conditional Expressions
• Bash Guide for Beginners
  • Conditional statements
• Advanced Bash-Scripting Guide by Mendel Cooper
  • Reference card
• .bashrc, etc
• Getting Started with BASH
• The Command Line Crash Course (for cli newbs)

man: echo

Basics

• IBM - Linux tip: Bash parameters and parameter expansions
• Debugging a script Bash Hackers Wiki

Options

• http://rsalveti.wordpress.com/2007/04/03/bash-parsing-arguments-with-getopts/
• http://wiki.bash-hackers.org/howto/getopts_tutorial
• shFlags - getop wrapper for long flags with fallback for non gnu-getopt

Zsh

• Zzappers Best of ZSH Tips
• https://github.com/sykora/etc/tree/master/zsh
• https://gist.github.com/914831
• https://github.com/olivierverdier/zsh-git-prompt or https://github.com/jcorbin/zsh-git