Provided by: console-tools_0.2.3dbs-65.1ubuntu2_amd64 bug


       showkey - examine the scan codes and keycodes sent by the keyboard


       showkey  [  -[hVskm] | --help | --version | --scancodes | --keycodes | --keymap ] [ -t N |
       --timeout=N ]


       showkey prints to standard output either the scan codes, the keycode, or the character  of
       each  key  pressed/released.  The  program  runs  until  10 seconds (or the amount of time
       specified by the --timeout or -t option) has elapsed since the last key press  or  release
       event, or until it receives a suitable signal, like SIGTERM, from another process.

       showkey  has  three  modes  of  operation,  scancode  dumping, keycode dumping, and keymap
       testing, selected by a command line option (see below).


       -h --help
              showkey prints to the standard error output  its  version  number,  a  short  usage
              message, then exits.

       -V --version
              showkey prints to the standard error output its version number, then exits.

       -s --scancodes
              Starts showkey in scan code dump mode.

              In  this  mode,  showkey  prints  in hexadecimal format each byte received from the
              keyboard to the standard output. A new line is printed when an  interval  of  about
              0.1  seconds occurs between the bytes received, or when the internal receive buffer
              fills up. This can be used to determine roughly, what byte sequences  the  keyboard
              sends  at  once  on  a  given  key  press.  The scan code dumping mode is primarily
              intended for debugging the keyboard driver or other low level interfaces.  As  such
              it shouldn't be of much interest to the regular end-user.

       -k --keycodes
              Starts  showkey  in  keycode  dump  mode.  This  is the default, when no command is
              specified is specified.

              In this mode, showkey prints to the standard output the keycode number or each  key
              pressed  or  released.  The  kind of the event, press or release, is also reported.
              Keycodes are numbers assigned by the kernel to each individual physical key.  Every
              key  has  always  only  one  associated  keycode number, whether the keyboard sends
              single or multiple scan codes when pressing it. Using showkey in this mode, you can
              find out what numbers to use in your personalized keymap files.

       -m --keymap
              Starts showkey in keycode dump mode.

              In  this mode, showkey displays the characters as they are translated by the kernel
              using the current keymap. It may be useful to writers of install programs, to allow
              the user to test a new keyboard before really installing it.


       -t N --timeout=N
              This option changes the timeout (in seconds) from its default of 10s.


       showkey was developed by Risto Kankkunen for kbd-0.81.

       It  was  later extended by Yann Dirson <> to support the --keymap command
       and the --timeout option.


       The --keymap mode should report action keys by displaying what action should be performed,
       instead of executing the action.


       loadkeys(1), dumpkeys(1), keymaps(5), setkeycodes(8).