$mkdir(<directory> [<directory> …])

The <directory> argument(s) are dword which is different from most function arguments.

This function adds the following directories to the filesystem, using the mkdir(3) library call. The default permissions are 0777, minus the current umask value. Any number of directories may be created at once. Tilde-expansion is permitted.

This function creates one or more new directories. It is probably most useful for script installers. Make sure you set your umask correctly, otherwise you may inadvertently create the directory with permissions that allow anyone to write to it.

> 0   number of directories that could not be created
  0   success

$mkdir(~/myscript)                probably returns "0"
$mkdir(~/myscript /etc/hackerz)   probably returns "1"