# Directory In terms of UNIX(r), a directory is a special file which contains a list of [hardlinks](../dict/hardlink.md) to other files. These other files also can be directories of course, so it's possible to create a \"hierarchy of directories\" - the UNIX(r)-typical filesystem structure. The structure begins at the special directory `/` (root directory) and all other directory entries are **subdirectories** of it. ## See also - [hardlink](../dict/hardlink.md) - [file](../dict/file.md) - [special file](../dict/special_file.md)