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gpspipe(1)                    GPSD Documentation                    gpspipe(1)


       gpspipe - tool to connect to gpsd and retrieve sentences


       gpspipe [-?] [--count COUNT] [--daemonize] [--debug LVL] [--help]
               [--json] [--nmae] [--output FILE] [--pps] [--profile] [--raw]
               [--scaled] [--seconds SEC] [--serial DEV] [--sleep] [--spinner]
               [--split24] [--timefmt FMT] [--timestamp] [--usec] [--version]
               [--zulu] [-2] [-?] [-d] [-D LVL] [-h] [-l] [-n COUNT] [-o FILE]
               [-p] [-P] [-r] [-R] [-S] [-s serial-device] [-t]
               [-T timestamp-format] [-u] [-v] [-V] [-w] [-x seconds] [-Z]
               [server [:port [:device]]]


       gpspipe is a tool to connect to gpsd and output the received sentences
       to stdout. This makes the program useful as a pipe from gpsd to another
       program or file.

       gpspipe does not require root privileges, and can be run concurrently
       with other tools connecting to the local gpsd without causing problems.

       The output will consist of one or both of the raw NMEA or native gpsd
       sentences. Each line can be optionally time stamped. There is also an
       option to exit gracefully after a given count of packets.

       Optionally a server, TCP/IP port number and remote device can be given.
       If omitted, gpspipe connects to localhost on the default port (2947)
       and watches all devices opened by gpsd.

       gpspipe may be run as a daemon, but requires the -o, --output flag for
       writing the output to a file.


       -?, -h, --help
           Print a usage message and exit.

       -2, --split24
           -2 sets the split24 flag on AIS reports.

       -d, --daemonize
           Run as a daemon.

       -d LVL, --debug LVL
           Set debug level to LVL.

       -l, --sleep
           Sleep for ten seconds before attempting to connect to gpsd. This is
           very useful when running as a daemon, giving gpsd time to start
           before attempting a connection.

       -n COUNT, --count COUNT
           Exit after COUNT messages are output.

       -o FILE, --output FILE
           Cause the collected data to be written to the specified file. Use
           of this option is mandatory if gpspipe is run as a daemon.

       -p, --profile
           Dump profiling information in JSON.

       -P, --pps
           Enables dumping of PPS drift JSON in NMEA and raw modes.

       -r, --nmea
           Cause NMEA sentences to be output. This may be NMEA, pseudo NMEA
           built from binary data, or some combination of both.

       -R, --raw
           Causes super-raw (gps binary) data to be output. This will forward
           exactly what the device sent.

       -s DEV, --serial DEV
           Cause the collected data to be written to the specified serial
           device (DEV) with settings 4800 8N1. Thus gpspipe can be used with
           -s, --serial and -r, --nmea options to emulate a serial port
           hardwired to a GPS that gpsd is managing.

       -S, --scaled
           Set the scaled flag. This is for AIS and SUBFRAME data only. Scaled
           data will be output in the JSON, instead of raw data in the JSON.

       -t, --timestamp
           Add a UTC timestamp to each sentence output.

       -T FMT, --timefmt FMT
           Set the format of the timestamp. See strftime(3) for the available
           placeholders. Setting this option implies -t, --timestamp. Default
           setting is "%F %T"

       -u, --usec
           Use usec resolution time stamp, implies -t, --timestamp. Use twice
           (-uu) to output sec.usec.

       -v, --spinner
           Show a spinning activity indicator on stderr. This is useful if
           stdout is redirected into a file or a pipe. By default the spinner
           is advanced with every messages written; specifying -v, --spinner
           more than once will double the number of messages required to
           rotate the spinner.

       -V, --version
           Print the program version and exit.

       -w, --json
           Cause native gpsd JSON sentences to be output.

       -x SEC, --seconds SEC
           Exit after delay of SEC seconds.

       -z, --zulu
           Set the timestamp format iso8601: implies -t

       At least one of -R, -r or -w must be specified.

       You must use -o if you use -d.


       When gpsd is running, gpspipe -r -n 100 will send one hundred raw NMEA
       sentences to standard output, then exit.

       When gpsd is running, gpspipe -x 5 -w|sed -n '/TPV/{p;q}' will wait at
       most 5 seconds for a TPV message, print it to stdout, then exit.


       gpsd(8), gps(1), libgps(3), libgpsmm(3), gpsprof(1), gpsfake(1),
       gpsctl(1), gpscat(1).  gpsmon(1).


       Gary E. Miller <>.

The GPSD Project                5 December 2020                     gpspipe(1)

gpsd 3.22 - Generated Sat Jan 16 09:33:34 CST 2021
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