1.0.0 • Public • Published


A Grunt task to watch and run tasks on multiple Grunt projects.

Create a Grunt Hub

A Grunt Hub is just a folder with a Gruntfile and this grunt plugin installed. To create one do:

mkdir grunt-hub && cd grunt-hub
npm install grunt-hub
cp -R node_modules/grunt-hub/tasks/init/hub/* .

Then edit the Gruntfile file to point to your other Grunt projects and run: grunt hub.

Integrate With an Existing Grunt Project

Install this grunt plugin next to your project's Gruntfile with: npm install grunt-hub

Then add this line to your project's Gruntfile:


Watching Forever

The common use for grunt-hub is for a development server. Where you would like to watch multiple projects and compile the SASS or concat/minify JS upon every project as you edit.

Depending on your system, there are various ways to ensure the grunt-hub stays alive. Such as with upstart and monit.

A simple way is to use nohup and create a script:

DIR=`dirname $0`
/usr/bin/nohup /usr/local/bin/grunt --base $DIR hub --no-color &
echo "Grunt Hub Started"

and a script:

ps -ef | sed -n '/grunt/{/grep/!p;}' | awk '{print$2}' | xargs -I kill {}
echo "Grunt Hub Stopped"

Put these in your grunt-hub folder and run ./ to start and ./ to stop.

Using forever

forever is a another great way to watch multiple grunt projects forever.

  • Install npm install forever grunt grunt-cli grunt-hub --save-dev
  • Add a start script to your package.json:
  "name": "my-grunt-hub",
  "version": "0.1.0",
  "scripts": {
    "start": "forever ./node_modules/.bin/grunt hub"
  • Now you can start your hub with npm start.


This plugin includes a hub task and overrides the watch task.

hub task

The hub task is for running tasks on multiple projects. It would like to know which Gruntfiles to use and which tasks to run on each Grunt project. For example if I would like to lint and test on every Grunt project one folder up:

  hub: {
    all: {
      src: ['../*/Gruntfile.js'],
      tasks: ['jshint', 'nodeunit'],

If tasks were omitted, it will run the default tasks.

You can override tasks on the cli with args: grunt hub:all:watch will run the watch task on all projects instead of jshint, nodeunit.



Default: 3

Set to the number of concurrent task runs to spawn.


Default: false

By default, hub will skip its own Gruntfile. Set to true to allow hub to include itself.

Note: Only set this for tasks which are not part of the default task of their respective Gruntfile, or an infinite loop will occur.

hub: {
  all: {
    options: {
      allowSelf: true
    src: ['./Gruntfile.js', '../client1/Gruntfile.js', '../client2/Gruntfile.js'],

Where did the watch task go?

It isn't necessary. Just npm install grunt-contrib-watch --save-dev into your project folders. Then either add the watch task to your tasks list in your hub task config. Or run with grunt hub:target:watch.


Please open an issue or send a pull request. Thanks!

Release History

  • Please view the commit history for future release history.
  • 0.7.0 Update async to ~0.9.0, warn when files not found and finish task when idle. Thanks @dylancwood!
  • 0.6.2 Fix syntax error. Thanks @eugeneiiim!
  • 0.6.1 Fix path.resolve must be strings for ownGruntfile. Thanks @terribleplan!
  • 0.6.0 Removed unneeded watch task. Fix issue with Gruntfiles not named Gruntfile. Removed deprecated grunt.util libs. Ability to override tasks via the cli.
  • 0.5.0 Run hub tasks in parallel. Add concurrent option to hub. Better error handling/printing. Thanks @plestik!
  • 0.4.0 Support for Grunt v0.4.
  • 0.3.6 Propagate exit codes. Thanks @wachunga!
  • 0.3.5 Update for latest grunt. Thanks @akinofftz!
  • 0.3.4 Allow watch task to be renamed.
  • 0.3.3 Fix issue with grunt-hub passing it's own tasks. Minor refactoring.
  • 0.3.2 Fix dep to grunt-lib-contrib. Include options in verbose output. Better spawn grunt in hub task.
  • 0.3.1 Update to gaze@0.2.0. Only spawn one at a time. Add interrupt option. Allow tasks to be undefined. Update to run on Grunt v0.4.
  • 0.3.0 Use gaze for watching, Grunt v0.4 compatibility
  • 0.2.0 refactor: make easier to upgrade to Grunt v0.4, windows support, fix issue with mutliple watch targets
  • 0.1.1 add copyable template for a grunt hub
  • 0.1.0 initial release


Copyright (c) 2018 Kyle Robinson Young
Licensed under the MIT license.



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