目标键位:Caps Lock映射为Control L,Control L映射为Escape,Escape映射为Caps Lock
方法:修改/usr/share/X11/xkb/keycodes/evdev,使
<CAPS> = 9 <LCTL> = 66 <ESC> = 37
执行 sudo dpkg-reconfigure xkb-data 即生效
注:只在X Window下生效