gpxlogger -VERSION (return code: 0)
gpxlogger: version 3.16 (revision 3.16-4)
gpxlogger --help (return code: 1)
gpxlogger: invalid option -- '-'
Usage: gpxlogger [-V] [-h] [-d] [-i timeout] [-f filename] [-m minmove]
[-e exportmethod] [server[:port:[device]]]
defaults to 'gpxlogger -i 5 -e dbus localhost:2947'