如何在Grunt中的循环内执行Shell命令？

Question

I have an app folder with multiple subfolders. I'm looping through these folders and trying to run a shell command for each folder. This is what i have so far:

grunt.registerTask('deploy', function() {

    var done = this.async();
    var exec = require('child_process').exec;

    // Start deployment
    grunt.log.write('Starting deployment...').ok();

    // Read all subdirectories from the app folder
    grunt.file.expand("./app/*").forEach(function (dir) {

        // Get folder name
        var functionName = dir.split('/')[2];

        exec('echo ' + functionName, {
            cwd: dir
        }, function(error, stdout, stderr) {
            grunt.log.ok(functionName+' deployed.');
            done();
        });

    });

});

What i would expect in my terminal is to print out each folder name, but all i got is the callback in the exec function, like this:

Running "deploy" task
Starting deployment...OK
>> testA deployed.
>> testB deployed.

I'm not sure what I'm doing wrong.

Answer 1

The output of the command can be found in the stdout variable passed to your callback. It's not automatically printed the terminal.