NAME

       gpspipe - tool to connect to gpsd and retrieve sentences

SYNOPSIS

       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]]]

DESCRIPTION

       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.

OPTIONS

       -?, -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.

EXAMPLES

       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.

SEE ALSO

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

AUTHOR

       Gary E. Miller <gem@rellim.com>.