Control Gulp with stdio

gulpfile.js

gulp.task('watch', function() {
  gulp.watch('static/*', ['static']);
  gulp.watch('css/**/*.css', ['css']);
  gulp.watch(['js/**/*.js'], ['lint', 'browserify']);

  process.stdin.setEncoding('utf8');
  process.stdin.on('readable', function() {
    var chunk = process.stdin.read();
    switch (chunk) {
      case null:
        gutil.log('This build system supports stdin commands');
        break;
      case 'test\n':
        gulp.tasks.test.fn();
        break;
      default:
        gutil.log('Unknown command');
    }
  });
});