GPSMON(1) GPSD Documentation GPSMON(1) (NAME) gpsmon - GPS (SYNOPSIS) gpsmon [OPTIONS} [server[:port[:device]]] gpsmon -h gpsmon -V (DESCRIPTION) gpsmon GPS . GPS GPS . (dump) . gpsmon GPS . gpsd . gpsd gpsmon . / (climb/sink) (fix) . gpsd cgps xgps GNSS gpsd . gpsd gpsmon . NMEA NMEA . -t t . gpsmon x telnet ssh . (packet-log) . ( -a --nocurses) . <> () 1PPS . (scrolling hex dump) GPS . CR/LF . <<>>>>> GPS . <> 1PPS . gpsd gpsmon (direct mode) . GPS NMEA (trigger sentence) NMEA . -t --type . gpsmon (root) . root . (OPTIONS) -? -h --help . -a --nocurses (ncurses) . . GPSD . -d LVL --debug LVL (packet-getter) GPSD . packet-getter . -l FILE --logfile FILE (FILE) . (firmware) . -L --list gpsmon GPS . . -n --nmea gpsmon NMEA0183 gpsd . -t TYPE --type TYPE (TYPE) . . NMEA ( SiRF binary) . : gpsd ( ) . gpsd localhost GPSD . : [server[:port[:device]]] ARGUMENTS gps(1) . . (direct-connect) gpsmon (baud rate) . (COMMANDS) gpsmon : i ( .) / (subtype probing) . gpsmon ( ). 'i1' gpsd . 'i0' 'i' . . SiRF "n" . SiRF . . c ( .) (cycle time). . . l (packet logging). . l . GPS . (append) . n ( .) 0 NMEA 1 (/native) . (toggle) . . GPS NMEA . (prompt) . q gpsmon. Control-C . s ( .) (baud rate). "s9600". - - (wordlength-parity-stopbits) 8N1 () 7E1 . . . GPS USB Bluetooth 8N1 UART GPS . (hang) GPS ( ) NVRAM . t ( .) . gpsd gpsmon gpsmon . gpsd gpsmon . x ( .) (hex payload) . . . (headers) (trailers) . -x gpsctl 1 . X ( .) (raw hex bytes) . . . Ctrl-S (freeze) (debug). Ctrl-Q . ( NMEA NMEA gpsmon .) GPS () <> () <>. . : gpsmon -l . SiRF (SiRF support) GPS . ECEF (leap-second) . 1PPS . GPS SiRF : A ( .) 50BPS. M ( .) (M1) (M0) (static navigation). SiRF : << . () . . .>> (Non-static) (snap) . . P ( .) . MID 19 ( Static Navigation 'M' ) . SiRF (SiRF Binary Protocol Reference Manual) . u-blox (u-blox support) GPS . ECEF . 1PPS . . (BUGS AND LIMITATIONS) PPS Offset PPS . . (RETURN VALUES) 0 . 1 (SEE ALSO) gpsd(8), cgps, (1)gpsctl(1), gps(1), *xgps(1) (RESOURCES) : (COPYING) GPSD SPDX-License-Identifier: BSD-2-clause (AUTHOR) Eric S. Raymond GPSD, Version 3.27.5 2025-11-04 GPSMON(1)