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KBDMAP(5) |
FreeBSD File Formats Manual |
KBDMAP(5) |
kbdmap —
keyboard map file format for kbdcontrol
A kbdmap file describes how the keys on a keyboard
should behave. These files can be loaded using
kbdcontrol(1),
or
kbdmap(1)
can be used to select one of the default kbdmap files
interactively. A kbdmap file can be specified in
rc.conf(5),
to be loaded at boot time. The current keymap may also be printed using
kbdcontrol(1).
Each line in the file can describe a key or an accent. A
‘# ’ character begins a comment, which
extends to the end of the line.
The description of a key begins with the scancode for that key.
Then the effect of the key under combinations of shift, control and alt are
listed in the following order: no modifier, shift, control, control and
shift, alt, alt and shift, alt and control, alt and control and shift. The
action of the key under each modifier can be:
- 'symbol'
- The symbol the key should produce, in single quotes.
- decnum
- The Unicode value to produce as a decimal number (see
ascii(7)).
For example, 32 for space.
- 0xhexnum
- The Unicode value to produce as a hexadecimal number. For example, 0x20
for space.
- ctrlname
- One of the standard names for the ASCII control characters: nul, soh, stx,
etx, eot, enq, ack, bel, bs, ht, lf, vt, ff, cr, so, si, dle, dc1, dc2,
dc3, dc4, nak, syn, etb, can, em, sub, esc, fs, gs, rs, us, sp, del.
- control-alias
- One of the historical aliases for certain ASCII control characters: nl,
np, ns.
- accentname
- By giving one of the accent names, the next key pressed will produce an
accented character in accordance with that accent. See the description of
accents below. The accent names are: dgra, dacu, dcir, dtil, dmac, dbre,
ddot, duml, ddia, dsla, drin, dced, dapo, ddac, dogo, dcar.
- fkeyN
- Act as the Nth function key,
where N is a decimal number in the range from 1 to
96. Refer to the
atkbd(4)
manual page for a list of predefined function keys. You can use the
-f option of the
kbdcontrol(1)
utility to assign arbitrary strings to function keys.
- lshift
- Act as left shift key.
- rshift
- Act as right shift key.
- clock
- Act as caps lock key.
- nlock
- Act as num lock key.
- slock
- Act as scroll lock key.
- lalt|alt
- Act as left alt key.
- btab
- Act as backwards tab.
- lctrl|ctrl
- Act as left control key.
- rctrl
- Act as right control key.
- ralt
- Act as right alt (altgr) key.
- alock
- Act as alt lock key.
- ashift
- Act as alt shift key.
- meta
- Act as meta key.
- lshifta|shifta
- Act as left shift key / alt lock.
- rshifta
- Act as right shift key / alt lock.
- lctrla|ctrla
- Act as left ctrl key / alt lock.
- rctrla
- Act as right ctrl key / alt lock.
- lalta|alta
- Act as left alt key / alt lock.
- ralta
- Act as right alt key / alt lock.
- nscr
- Act as switch to next screen.
- pscr
- Act as switch to previous screen.
- scrN
- Switch to screen N, where N is
a decimal number.
- boot
- Reboot the machine.
- halt
- Halt the machine.
- pdwn
- Halt the machine and attempt to power it down.
- debug
- Call the debugger.
- susp
- Use APM to suspend power.
- saver
- Activate screen saver by toggling between splash/text screen.
- panic
- Panic the system. The
sysctl(8)
variable machdep.enable_panic_key must be set to 1
to enable this feature.
- paste
- Act as mouse buffer paste.
Finally, to complete the description of a key, a flag which
describes the effect of caps lock and num lock on that key is given. The
flag can be ‘C ’ to indicate that caps
lock affects the key, ‘N ’ to indicate
that num lock affects the key, ‘B ’ to
indicate that both caps lock and num lock affects the key, or
‘O ’ to indicate that neither affects
the key.
An accent key works by modifying the behavior of the next key
pressed. The description of an accent begins with one of the accent names
given above. This is followed by the symbol for the accent, given in single
quotes or as a decimal or hexadecimal Unicode value. This symbol will be
produced if the accent key is pressed and then the space key is pressed.
The description of the accent key continues with a list showing
how it modifies various symbols, by giving pairs made up of the normal
symbol and the modified symbol enclosed in parentheses. Both symbols in a
pair can be given in either single quotes or as decimal or hexadecimal
Unicode values.
For example, consider the following extract from a
kbdmap :
041 dgra 172 nop nop '|' '|' nop nop O
dgra '`' ( 'a' 224 ) ( 'A' 192 ) ( 'e' 232 ) ( 'E' 200 )
( 'i' 236 ) ( 'I' 204 ) ( 'o' 242 ) ( 'O' 210 )
( 'u' 249 ) ( 'U' 217 )
This extract configures the backtick key on a UK keyboard to act as a grave
accent key. Pressing backtick followed by space produces a backtick, and
pressing a backtick followed by a vowel produces the ISO-8859-1 symbol for
that vowel with a grave accent.
- /usr/share/syscons/keymaps/*
- standard keyboard map files for syscons
- /usr/share/vt/keymaps/*
- standard keyboard map files for vt
This manual page first appeared in FreeBSD 4.2.
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