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       gpspipe - tool to connect to gpsd and retrieve sentences


       gpspipe [-h] [-d] [-l] [-o filename] [-n count] [-r] [-R]
               [-s serial-device] [-t] [-w] [-v] [-D debug-level] [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 flag for writing
       the output to a file.


       -h makes gpspipe print a usage message and exit.

       -d causes gpspipe to run as a daemon.

       -l causes gpspipe to 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.

       -r causes raw NMEA sentences to be output.

       -R causes super-raw (gps binary) data to be output. This overrides NMEA
       and gpsd output modes.

       -s option causes the collected data to be written to the specified
       serial device with settings 4800 8N1. Thus gpspipe can be used with -s
       and -r options to emulate a serial port hardwired to a GPS that gpsd is

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

       -w causes native gpsdsentences to be output.

       -t adds a timestamp to each sentence output.

       -n [count] causes [count] sentences to be output.  gpspipe will then
       exit gracefully.

       -v causes gpspipe to 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 more
       than once will double the number of messages required to rotate the

       -V prints the version, then exits.

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


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


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


       Gary E. Miller There is a project page for gpsd


        1. here