/usr/bin/gpsctl --help — Chainguard OS Manuals

From gpsd-clients 3.27.5-r5 (os), captured 2026-11-05 by running gpsctl --help (exit 0). permalink

usage: gpsctl [OPTIONS] [device]

  --binary            Switch device to native binary mode.
  --debug DEBUGLEVEL  Set debug level to DEBUGLEVEL.
  --direct            Force direct access to the device.
  --echo              Echo specified control string with wrapper.
  --help              Show this help, then exit
  --list              List known device types and exit.
  --nmea              Switch device to NMEA mode.
  --rate RATE         Change receiver cycle time to RATE.
  --reset             Force reset to default mode.
  --rmshm             Remove the SHM export segment and exit.
  --ship CONTROL      Ship specified control string.
  --speed SPEED       Set device speed to SPEED.
  --timeout TIMEOUT   Set the timeout on packet recognition.
  --type DEVTYPE      Force the device type.
  --version           Show version, then exit
  -?                  Show this help, then exit
  -b                  Switch device to native binary mode.
  -c RATE             Change receiver cycle time to RATE.
  -D DEBUGLEVEL       Set debug level to DEBUGLEVEL.
  -e                  Echo specified control string with wrapper.
  -f                  Force direct access to the device.
  -h                  Show this help, then exit
  -l                  List known device types and exit.
  -n                  Switch device to NMEA mode.
  -R                  Remove the SHM export segment and exit.
  -r                  Force reset to default mode.
  -s SPEED            Set device speed to SPEED.
  -t DEVTYPE          Force the device type.
  -T TIMEOUT          Set the timeout on packet recognition.
  -V                  Show version, then exit
  -x CONTROL          Ship specified control string.

Options (31)

Option	Description	Source
`--binary`	Switch device to native binary mode.	help
`--debug` DEBUGLEVEL	Set debug level to DEBUGLEVEL.	help
`--direct`	Force direct access to the device.	help
`--echo`	Echo specified control string with wrapper.	help
`--help`	Show this help, then exit	help
`--list`	List known device types and exit.	help
`--nmea`	Switch device to NMEA mode.	help
`--rate` RATE	Change receiver cycle time to RATE.	help
`--reset`	Force reset to default mode.	help
`--rmshm`	Remove the SHM export segment and exit.	help
`--ship` CONTROL	Ship specified control string.	help
`--speed` SPEED	Set device speed to SPEED.	help
`--timeout` TIMEOUT	Set the timeout on packet recognition.	help
`--type` DEVTYPE	Force the device type.	help
`--version`	Show version, then exit	help
`-?`	Display program usage and exit.	help + man
`-b`	Put the GNSS receiver into native (binary) mode.	help + man
`-c` RATE	Change the receivers’s cycle time.	help + man
`-D` DEBUGLEVEL	Set debug level to DEBUGLEVEL.	help + man
`-e`	Generate the packet from any other arguments specified and ship it to standard output instead of the device.	help + man
`-f, --force`	Force low-level, direct, access (not through the daemon).	help + man
`-h`	Show this help, then exit	help
`-l`	List a table showing which option switches can be applied to which device types, and exit.	help + man
`-n`	Put the GNSS receiver into NMEA mode.	help + man
`-R`	Remove the GPSD shared-memory segment used for SHM export.	help + man
`-r`	Force reset to default mode.	help + man
`-s` SPEED	Set the baud rate at which the receiver emits packets.	help + man
`-t` DEVTYPE	Force the device type.	help + man
`-T` TIMEOUT	Set the timeout on packet recognition.	help + man
`-V`	Display program version and exit.	help + man
`-x` CONTROL	Send the specified control string to the GNSS receiver.	help + man

Exit status (2) from the manual page

`0`	on success.
`1`	on failure

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.