/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:57: GtkWarning: could not open display warnings.warn(str(e), _gtk.Warning) Usage: xgpsspeed [-V|--version] [-h|--help] [--debug] [--host] [--port] [--device] [--speedunits {[mph] [kmh] [knots]}] [host [:port [:device]]] xgpsspeed: error: no such option: --version

/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:57: GtkWarning: could not open display warnings.warn(str(e), _gtk.Warning) Usage: xgpsspeed [-V|--version] [-h|--help] [--debug] [--host] [--port] [--device] [--speedunits {[mph] [kmh] [knots]}] [host [:port [:device]]] Options: -h, --help show this help message and exit --host=HOST The host to connect. [Default localhost] --port=PORT The port to connect. [Default 2947] --device=DEVICE The device to connet. [Default None] --speedunits=SPEEDUNITS The unit of speed. Possible units are: mph, kmh, knots. [Default mph] --maxspeed=MAXSPEED max speed of the speedmeter [Default 50] --nautical Enable nautical-style speed and track display. --debug=DEBUG Set level of debug. Must be integer. [Default 0] BSD terms apply: see the file COPYING in the distribution root for details.