gpionotify - libgpiod command-line utility

       Bartosz Golaszewski <brgl@bgdev.pl>

       Copyright © 2017-2023 Bartosz Golaszewski License: GPL-2.0-or-later
       This  is  free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent
       permitted by law.

libgpiod v2.2.1                                    March 2025                                      GPIONOTIFY(1)

       Wait for changes to info on GPIO lines and print them to standard output.

       Lines are specified by name, or optionally by offset if the chip option is provided.

       gpionotify - libgpiod command-line utility

--banner
              display a banner on successful startup

       --by-name
              treat lines as names even if they would parse as an offset

       -c, --chip <chip>
              restrict scope to a particular chip

       -e, --event <event>
              specify  the events to monitor Possible values: 'requested', 'released', 'reconfigured'.  (default
              is all events)

       -h, --help
              display this help and exit

       -F, --format <fmt>
              specify a custom output format

       --idle-timeout <period>
              exit gracefully if no events occur for the period specified

       --localtime
              convert event timestamps to local time

       -n, --num-events <num>
              exit after processing num events

       -q, --quiet
              don't generate any output

       -s, --strict
              abort if requested line names are not unique

       --unquoted
              don't quote line or consumer names

       --utc  convert event timestamps to UTC

       -v, --version
              output version information and exit

   Chips:
              A  GPIO  chip  may  be  identified  by  number,  name,  or  path.   e.g.  '0',  'gpiochip0',   and
              '/dev/gpiochip0' all refer to the same chip.

   Periods:
              Periods are taken as milliseconds unless units are specified. e.g. 10us.  Supported units are 'm',
              's', 'ms', and 'us' for minutes, seconds, milliseconds and microseconds respectively.

   Formatspecifiers:
       %o     GPIO line offset

       %l     GPIO line name

       %c     GPIO chip name

       %e     numeric info event type ('1' - requested, '2' - released or '3' - reconfigured)

       %E     info event type ('requested', 'released' or 'reconfigured')

       %a     line attributes

       %C     consumer

       %S     event timestamp as seconds

       %U     event timestamp as UTC

       %L     event timestamp as local time

       Report bugs to:
           Bartosz Golaszewski <brgl@bgdev.pl>
           linux-gpio <linux-gpio@vger.kernel.org>

gpionotify [OPTIONS] <line>...