#!/bin/bash
# usage: add_to_dock.sh <path to your .app bundle>

defaults write com.apple.dock persistent-apps -array-add "<dict><key>tile-data</key><dict><key>file-data</key><dict><key>_CFURLString</key><string>${1}</string><key>_CFURLStringType</key><integer>0</integer></dict></dict></dict>"
killall Dock