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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

       gps(1), gpsctl(1), gpsdebuginfo(1), gpsprof*(1), gpsfake(1), gpscat(1),
       gpspipe(1), gpsmon(1), xgps*(1). xgpsspeed(1)

       gps(1), libgpsmm(3)

       gpsd(8)


RESOURCES

       Project web site:  <https://gpsd.io/>


COPYING

       This file is Copyright 2013 by the GPSD project
       SPDX-License-Identifier: BSD-2-clause



GPSD Version 3.24                  2021-09-20                             gps(1)

mgpsd 3.24 - Generated Sun Jan 1 10:33:22 CST 2023
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