Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
deliverquota.courier -V (return code: 75)
--version: No such file or directory
deliverquota.courier (return code: 73)
Usage: deliverquota.courier [-c] [-w percent] maildir