List grunt task and exec

Gruntfile.js

var grunt = require('grunt');
var gruntfile = require('./Gruntfile.js')(grunt);


var tasks = grunt.task._tasks;
var tasks_array = [];

for (var task in tasks) {
    if (tasks.hasOwnProperty(task)) {
        console.log(tasks[task].name);
        tasks_array.push(tasks[task].name);
    }
}


/*grunt.util.spawn({                                                                                                               
    grunt: true,                                                                                                                   
    args: ['dist']                                                                                                                 
}, function(err, res, code) {                                                                                                      
    console.log(arguments);                                                                                                        
});*/