Update all global node.js modules

npm-update-global.js

require('shelljs/global');

var execOutdated = exec('npm outdated -g --depth=0 --json');
if (execOutdated.code != 0) {
  console.log(execOutdated.output);
  process.exit(1);
}

if (execOutdated.output == '') {
  console.log('Everything is up to date! Awesome!');
  process.exit(0);
}

var outdatedModules = JSON.parse(execOutdated.output);

for (var m in outdatedModules) {
  if (outdatedModules.hasOwnProperty(m)) {
    exec('npm install ' + m + ' -g');
  }
}