Running a grunt task on one Gruntfile from another

Question

I have a Gruntfile in the root of my project. I also have jQuery installed via Bower in an app/components/jquery directory.

As part of my Gruntfile I\'d like to run

Answer 1

Based on @Sindre's and @Stephen's answer, we can also get the console output "in real time" without being buffered:

grunt.registerTask('run-grunt', function() {
  var cb = this.async();
  var child = grunt.util.spawn({
      grunt: true,
      args: ['clean', 'copy:fonts'],
      opts: {
          cwd: 'bower_components/bootstrap'
      }
  }, function(error, result, code) {
      cb();
  });

  child.stdout.pipe(process.stdout);
  child.stderr.pipe(process.stderr);
});