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           showkey [-h|--help] [-a|--ascii] [-s|--scancodes] [-k|--keycodes]


           showkey  prints to standard output either the scan codes or the keycode
           or the 'ascii' code of each key pressed.  In the first  two  modes  the
           program  runs until 10 seconds have elapsed since the last key press or
           release event, or until it receives a suitable  signal,  like  SIGTERM,
           from  another process.  In 'ascii' mode the program terminates when the
           user types ^D.
           When in scancode dump 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  inter-
           faces.  As  such  it  shouldn't be of much interest to the regular end-
           user. However, some modern keyboards have keys or buttons that  produce
           scancodes  to which the kernel does not associate a keycode, and, after
           finding out what these are, the user can assign keycodes  with  setkey-
           When  in  the default keycode dump 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
           When in 'ascii' dump mode, showkey prints to the  standard  output  the
           decimal,  octal, and hexadecimal value(s) of the key pressed, according
           to he present keymap.


           -h --help
                  showkey prints to the standard error output its version  number,
                  a compile option and a short usage message, then exits.
           -s --scancodes
                  Starts showkey in scan code dump mode.
           -k --keycodes
                  Starts  showkey  in keycode dump mode. This is the default, when
                  no command line options are present.
           -a --ascii
                  Starts showkey in 'ascii' dump mode.


           The raw scan codes are available only on AT  and  PS/2  keyboards,  and
           even then they are disabled unless the atkbd.softraw=0 kernel parameter
           is used.  When the raw scan codes are not available, the kernel uses  a
           fixed  built-in table to produce scan codes from keycodes.  Thus, setk-
           eycodes(8) can affect the output of showkey in scan code dump mode.


           loadkeys(1), dumpkeys(1), keymaps(5), setkeycodes(8)
                                      1 Feb 1998                        SHOWKEY(1)

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