Grunt run task for another Grunt file - gruntjs

Question

I have 3 separate apps in 3 different folders. e.g. folder1, folder2 and folder3. folder3 is the combination of folder1 and folder2. Right now, I run dist task on both folder1 and folder2, then with bower link I link those dist folders with in folder3. Is there any way I could run a task with in folder3 that will create dist on folder1 and folder2, and link them with folder3? In short I want to run grunt task of folder1 and folder2 from folder3 and link them.
grunt.config.set('exec', {
loginapp: {
command: 'grunt -b C:/project/loginapp dist'
}
});
grunt.registerTask('all', [
'exec:loginapp'
]);
Folder structure
c:\project
----loginapp
dist
GruntFile.js
----webapp
public
bower_components
dist-loginapp
GruntFile.js
Hope this helps. I am in webapp > GruntFile where I run dist and that should run dist task on loginapp before its on dist task.

Answer 1

You can use -b flag to specify an alternate base path where there is a Gruntfile.
Then use grunt-exec to create task that run grunt task of your other projects.
E.g :
module.exports = function(grunt) {
grunt.config.set('exec', {
distFolder1: {
command: 'grunt -b relative/path/to/Gruntfile/of/folder1 taskName'
},
distFolder2: {
command: 'grunt -b relative/path/to/Gruntfile/of/folder2 taskName'
},
});
grunt.loadNpmTasks('grunt-exec');
};
Now you just have create a register task that run these two task and you other task.
E.g :
module.exports = function(grunt) {
grunt.registerTask('distAndLink', [
'exec:distfolder1',
'exec:distfolder2',
// your other task (bower link)
]);
};
and then run grunt distAndLink from folder 3.