Deletes a directory and all the subdirectories and files in it.

To delete one or more files and directories:
DELTREE [/Y] [drive:]path [[drive:]path[...]]

  /Y              Suppresses prompting to confirm you want to delete
                  the subdirectory.
  [drive:]path    Specifies the name of the directory you want to delete.

Note: Use DELTREE cautiously. Every file and subdirectory within the
specified directory will be deleted.