Resize the OS X launcher

resize_launcher.sh

#!/bin/bash

usage()
{
  echo -e ""
  echo -e "resize_launcher"
  echo -e ""
  echo -e "Change or revert the number of icons in the launcher"
  echo -e ""
  echo -e "Usage:"
  echo -e "\t./resize_launcher --help"
  echo -e "\tprint help"
  echo -e ""
  echo -e "\t./resize_launcher --revert"
  echo -e "\trevert to default launcher"
  echo -e ""
  echo -e "\t./resize_launcher X Y"
  echo -e "\tresize the launcher to X * Y"
  echo -e ""
}

resize_launcher()
{
  defaults write com.apple.dock springboard-columns -int $1
  defaults write com.apple.dock springboard-rows -int $2
  defaults write com.apple.dock ResetLaunchPad -bool TRUE;killall Dock
}

revert_launcher()
{
  defaults delete com.apple.dock springboard-rows
  defaults delete com.apple.dock springboard-columns
  defaults write com.apple.dock ResetLaunchPad -bool TRUE;killall Dock
}

one_arg_handler()
{
  while [ "$1" != "" ]; do
    case $1 in
          -h | --help )           usage
                                  exit
                                  ;;
          -r | --revert )         revert_launcher
                                  exit
                                  ;;
          * )                     usage
                                  exit 1
      esac
  done
}

case "$#" in
    0 ) usage
        exit 1
        ;;
    1 ) one_arg_handler "$1"
        exit
        ;;
    2 ) resize_launcher "$1" "$2"
        exit
        ;;
    * ) usage
        exit 1
        ;;
esac