$ ./working --create_dir --target_dir my_foo --debug
# ---skip---

%perm = (
          "octal" => {
                       "0_special" => 3072,
                       "1_user" => 0,
                       "2_group" => 32,
                       "3_other" => 2
                     },
          "octal_value" => {
                             "0_special" => 6,
                             "1_user" => 0,
                             "2_group" => 4,
                             "3_other" => 2
                           },
          "raw_octal" => 3106,
          "str" => {
                     "1_user" => "--S",
                     "2_group" => "r-S",
                     "3_other" => "-w-"
                   }
        );

# ---skip---