This script will prepare an package that uses grunt-0.3.x to use grunt-0.4.x. You may need to use superuser privileges to execute this script if you have grunt installed globally. Run this script in your grunt-0.3.x project directory that has been updated to use grunt-0.4.x.

upgrade-grunt.sh

#!/usr/bin/env bash
 
# Run this script in your grunt-0.3.x project directory that has been updated to use grunt-0.4.x

set -e

# Make sure node-0.8.x is installed
if node -v | grep ^v0.8.\* ; then
  echo "You have node 0.8.x installed..."
else
  echo "You need to install node-0.8 before continuing..."
  
  read -p "Do you want want to install node using brew? " -n 1 -r
  if [[ $REPLY =~ ^[Yy]$ ]]
  then
    brew update && brew install node
  else
    echo "Install node-0.8.x from nodejs.com"
    exit 1
  fi
fi

# Cleanup node_modules directory of the project
if [ -d ./node_modules ]
then
  echo "node_modules directory detected..."
  npm prune
  npm i
else
  echo "Please run this script in a node.js project directory."
  exit 1
fi  

echo "Uninstalling grunt (from global)..."
npm uninstall -g grunt

echo "Installing grunt-cli (globally)..."
npm install -g grunt-cli

echo "Running grunt with default options..."
grunt