GPS(1) GPSD Documentation GPS(1) NAME gps - Overview of gpsd clients and helpers SYNOPSIS Clients: cgps [OPTIONS] [server[:port[:device]]] gegps [OPTIONS] [server[:port[:device]]] gps2udp [OPTIONS] [server[:port[:device]]] gpscsv [OPTIONS] [server[:port[:device]]] gpsmon [OPTIONS] [server[:port[:device]]] gpspipe [OPTIONS] [server[:port[:device]]] gpsplot [OPTIONS] [server[:port[:device]]] gpsprof [OPTIONS] [server[:port[:device]]] gpsrinex [OPTIONS] [server[:port[:device]]] gpssubframe [OPTIONS] [server[:port[:device]]] gpxlogger [OPTIONS] [server[:port[:device]]] lcdgps [OPTIONS] [server[:port[:device]]] ubxtool [OPTIONS] [server[:port[:device]]] xgps [OPTIONS] [server[:port[:device]]] xgpsspeed [OPTIONS] [server[:port[:device]]] zerk [OPTIONS] [server[:port[:device]]] Helpers: gpscat [OPTIONS] file-or-serial-port gpsctl [OPTIONS] gpsdctl action device gpsdecode [OPTIONS] gpsdebuginfo gpsfake [OPTIONS] gpsinit [OPTIONS] ntpshmmon [OPTIONS] ppscheck [OPTIONS] device DESCRIPTION gpsd is a daemon for managing GPS receivers, GNSS receivers, AIS receivers, and more. Over time it has agglomerated a number of diverse clients that communicate with gpsd for various tasks. CLIENTS Each of the gpsd clients connects to a gpsd daemon to use the data in various ways. See the sections ARGUMENTS and OPTIONS for more information on the clients. cgps curses terminal client for gpsd gegps Google Earth client for gpsd gps Overview of gpsd clients and helpers gpscsv dump the JSON output from gpsd as CSV gpsdecode decode GPS, RTCM or AIS streams into a readable format gpsmon real-time GPS packet monitor and control utility gpspipe tool to connect to gpsd and retrieve sentences gpsplot tool to dynamically dump plot data from gpsd gpsprof profile a GPS and gpsd, plotting latency information gpsrinex Read data from gpsd convert to RINEX3 and save to a file. gpssubframe tool to dump subframe sentences from gpsd gpxlogger Tool to connect to gpsd and generate a GPX file lcdgps LCD client for gpsd xgps X client for gpsd xgpsspeed X speedometer for gpsd HELPERS The gpsd helpers can be used for administration of gpsd systems. gps2udp feed the take from gpsd to one or more aggregation sites gpscat dump the output from a GPS gpsctl control the modes of a GNSS receiver gpsdctl tool for sending commands to gpsd over its control socket gpsdebuginfo Generate a gpsd debug dump of your host. gpsfake test harness for gpsd, simulating a GNSS receiver gpsinit initialize CAN kernel modules for GPSD ntploggps log gpsd data ntpshmmon capture samples from gpsd or other ntpd refclock sources LIBRARIES Programmers can find additional information on the gpsd here: gpsd_json gpsd request/response protocol libgps C service library for communicating with the GPS daemon libgpsmm C++ and QT class wrappers for the GPS daemon libQgpsmm C++ and QT class wrappers for the GPS daemon OPTIONS The gpsd clients share a few common options: -?, -h, --help Print a summary of options and then exit. -V, --version Print the package version and exit. ARGUMENTS By default, clients collect data from the local gpsd daemon running on localhost, using the default GPSD port 2947. The optional argument to any client may override this behavior: [server[:port[:device]]] server The optional host name, IPv4 address, or IPv6 address of the gpsd daemon to connect to. If the server specification contains square brackets, the part inside them is taken as an IPv6 address and port/device suffixes are only parsed after the trailing bracket. The default is localhost. port The optional TCP port of the daemon to connect to. The default is 2947. device The optional device name to be watched. Some possible cases look like this: example.com Connect to the default port 2497 on example.com, trying both IPv4 and IPv6. example.com:2317 Look at port 2317 on example.com, trying both IPv4 and IPv6. localhost::/dev/ttyS1 Look at the default port, 2947, of localhost, trying both IPv4 and IPv6 and watching output from serial device 1. 71.162.241.5:2317:/dev/ttyS3 Look at port 2317 at the specified IPv4 address, collecting data from attached serial device 3. [FEDC:BA98:7654:3210:FEDC:BA98:7654:3210]:2317:/dev/ttyS5 Look at port 2317 at the specified IPv6 address, collecting data from attached serial device 5. ENVIRONMENT Most of the gpsd clients check for the environment variables GPSD_UNITS, LC_MEASUREMENT, and LANG. Maybe more. GPSD_UNITS is checked if no unit system is specified on the command line. It may be set to 'i'. 'imperial', 'm', 'metric', or 'n', 'nautical'. LC_MEASUREMENT and then LANG are checked if no unit system has been specified on the command line, or in GPSD_UNITS. If the value is 'C', 'POSIX', or begins with 'en_US' the unit system is set to imperial. The default if no system has been selected is metric. RETURN VALUES The gpsd clients return simple success or failure codes: 0 on success. 1 on failure SEE ALSO gegps(1), gpsctl(1), gpsdebuginfo(1), gpsprof*(1), gpsfake(1), gpscat(1), gpspipe(1), gpsmon(1), xgps*(1). xgpsspeed(1) libgps(3), libgpsmm(3) gpsd(8) RESOURCES Project web site: COPYING This file is Copyright 2013 by the GPSD project SPDX-License-Identifier: BSD-2-clause GPSD Version 3.25 2023-01-10 GPS(1)