achfile - change type and/or creator of Apple Macintosh files (netatalk
format)
apple_chfile [-t type] [-c creator] file...
apple_chfile changes the Macintosh type and/or creator of the file
arguments which have a corresponding .AppleDouble file.
-t type change the type.
-c creator change the creator.
returns exit status 0 if all files changed successfully
apple_file(1), afpd(8)