/usr/share/X11/xkb/symbols/ctrl is in xkb-data 2.5-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | // eliminate the caps lock key completely (replace with control)
partial modifier_keys
xkb_symbols "nocaps" {
replace key <CAPS> { [ Control_L, Control_L ] };
modifier_map Control { <CAPS>, <LCTL> };
};
// replace left control with Meta
xkb_symbols "lctrl_meta" {
replace key <LCTL> { [ Meta_L ] };
};
// swap the caps lock key with the left control key
partial modifier_keys
xkb_symbols "swapcaps" {
replace key <CAPS> { [ Control_L ] };
replace key <LCTL> { [ Caps_Lock ] };
};
// moves the control key to the middle row and the caps lock
// to the bottom row. Only works if the geometry or keycodes
// file has defined appropriate aliases for the keys in question.
partial modifier_keys
xkb_symbols "ac_ctrl" {
replace key <AC00> { [ Control_L ] };
replace key <AA00> { [ Caps_Lock ] };
};
// Moves the control key to the bottom row and the caps lock
// to the middle row. Only works if the geometry or keycodes
// file has defined appropriate aliases for the keys in question.
partial modifier_keys
xkb_symbols "aa_ctrl" {
replace key <AA00> { [ Control_L ] };
replace key <AC00> { [ Caps_Lock ] };
};
// Right Ctrl works as Right Alt
partial modifier_keys
xkb_symbols "rctrl_ralt" {
key <RCTL> { symbols[Group1]= [ Alt_R ] };
};
// Menu works as Right Ctrl
partial modifier_keys
xkb_symbols "menu_rctrl" {
replace key <MENU> { [ Control_R, Control_R ] };
modifier_map Control { Control_L, <MENU> };
};
// right alt functions as another ctrl key
partial modifier_keys
xkb_symbols "ralt_rctrl" {
replace key <RALT> { type[Group1] = "TWO_LEVEL",
symbols[Group1] = [ Control_R, Control_R ] };
modifier_map Control { <RALT> };
};
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