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.
gpsmon -VERSION (return code: 0)
gpsmon: 3.16 (revision 3.16-4)
gpsmon --help (return code: 1)
gpsmon: invalid option -- '-'
usage: gpsmon [-?hVn] [-l logfile] [-D debuglevel] [-t type] [server[:port:[device]]]