Linux cli command keyboard

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command keyboard and provides detailed information about the command keyboard, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the keyboard.

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NAME 🖥️ keyboard 🖥️

keyboard configuration file

DESCRIPTION

The keyboard file describes the properties of the keyboard. It is read by setupcon(1) in order to configure the keyboard on the console. In Debian systems the default keyboard layout is described in /etc/default/keyboard and it is shared between X and the console.

The specification of the keyboard layout in the keyboard file is based on the

options XkbModel, XkbLayout, XkbVariant and XkbOptions. Unfortunately, there is little documentation how to use them. Description of all possible values for these options can be found in the file base.lst.

You might want to read “The XKB Configuration Guide” by Kamil Toman and Ivan U. Pascal:

http://www.xfree86.org/current/XKB-Config.html

Other possible readings are:

https://wiki.archlinux.org/index.php/X_KeyBoard_extension
http://pascal.tsu.ru/en/xkb/
http://www.charvolant.org/~doug/xkb/

The complete XKB-specification can be found on

http://xfree86.org/current/XKBproto.pdf

The file keyboard consists of variable settings in

format:

VARIABLE=VALUE

Only one assignment is allowed per line. Comments (starting with ‘#’) are also allowed.

OPTIONS

The following variables can be set.

XKBMODEL
Specifies the

keyboard model name. Default: pc105 on most platforms.

XKBLAYOUT
Specifies the

keyboard layout name. This is usually the country or language type of the keyboard. Default: us on most platforms

XKBVARIANT
Specifies the

keyboard variant components. These can be used to further specify the keyboard layout details. Default: not set.

XKBOPTIONS
Specifies the

keyboard option components. Options usually relate to the behavior of the special keys

Default: not set.

BACKSPACE
Determines the behavior of

and

keys on the console. Allowed values: bs,** del and guess**. In most cases you can specify guess here, in which case the current terminal settings and the kernel of your operating system will be used to determine the correct value. Value bs specifies VT100-conformant behavior:

will generate ^H

and

will generate ^?

Value del specifies VT220-conformant behavior:

will generate ^?

and

will generate a special function sequence.

KMAP
Usually this variable will be unset but if you don’t want to use a

layout on the console, you can specify an alternative keymap here. Specify a file that is suitable as input for loadkeys(1) on Linux or for kbdcontrol(1) on FreeBSD.

FILES

The standard location of the keyboard file is /etc/default/keyboard. Description of all available keyboard models, layouts, variants and options is available in /usr/share/X11/xkb/rules/base.lst. In most cases, in /usr/share/keymaps/ or /usr/share/syscons/keymaps/ you will find several keymaps that can be used with the variable KMAP.

NOTES

In Debian systems, changes in /etc/default/keyboard do not become immediately visible to X. You should either reboot the system, or use

udevadm trigger --subsystem-match=input --action=change

In order to activate the changes on the console, run setupcon(1).

BUGS

When a triple-layout is used on the console, i.e. a layout with three

groups, then the group toggling happens in the following way: Group1 -> Group2 -> Group1 -> Group3.

On FreeBSD triple- and quadruple-layouts are not supported on the console (only the first and the second layout are taken into account).

The option grp:shifts_toggle is not supported on the console.

EXAMPLES

The following configuration will give you the standard

layout (us). The key

will act as a compose key (compose:menu) and

will act as third control key (ctrl:nocaps).

XKBLAYOUT=us
XKBVARIANT=
XKBOPTIONS=compose:menu,ctrl:nocaps

In the following configuration the right

key (grp:toggle) will toggle between

layout (us) and Greek (gr) layout. The option grp_led:scroll is ignored on the console but in X in means to use the ScrollLock keyboard led as indicator for the current layout (US or Greek).

XKBLAYOUT=us,gr
XKBVARIANT=
XKBOPTIONS=grp:toggle,grp_led:scroll

In the following configuration the

key combination will toggle (grp:ctrl_shift_toggle) between French keyboard (fr) without dead keys (nodeadkeys) and British (gb) “Dvorak” (dvorak) keyboard. The right

key will be a compose-key (compose:rwin) and the right

key will function as AltGr (lv3:lalt_switch).

XKBLAYOUT=fr,gb
XKBVARIANT=nodeadkeys,dvorak
XKBOPTIONS=grp:ctrl_shift_toggle,compose:rwin,lv3:ralt_switch

SEE ALSO

setupcon(1), ckbcomp(1), console-setup(5), loadkeys(1), kbdcontrol(1)

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