for _, fileName := range os.Args[1:] {
    rand.Seed(time.Now().UnixNano())

    var n = rand.Intn(100000)

    var padded = padUtf8.Left(strconv.Itoa(n), 5, "0")

    var err = xattr.Set(fileName, CommentAttr, []byte(padded))

    if err != nil {
      fmt.Println("Failed to set comment", err);
    }
  }