code: function cmd(patterns, options) {
    var str = normalize(patterns);
    var keys = Object.keys(options);
    var args = [];
    var valid = [
      'dotglob',
      'extglob',
      'failglob',
      'globstar',
      'nocaseglob',
      'nullglob'
    ];
  
    for (var i = 0; i < keys.length; i++) {
      var key = keys[i];
      if (valid.indexOf(key) !== -1) {
        args.push('-O', key);
      }
    }
  
    args.push('-c', 'for i in ' + str + '; do echo $i; done');
    return args;
  }
docs: Create the command to use