打开配置文件。
sudo emacs /etc/default/keyboard
找到“XKBOPTIONS”，
交换Capts Lock 与 Control键
XKBOPTIONS="ctrl:swapcaps"
或者设置Caps Lock为Control键
XKBOPTIONS="ctrl:nocaps"
最后执行 sudodpkg-reconfigure keyboard-configuration
--------------------------------------------------------------------------------------------------------
clear lock
clear control
keycode 105 = apostrophe quotedbl apostrophe quotedbl
keycode 48 = Control_R quotedbl Control_R
keycode 66 = Control_L Caps_Lock NoSymbol NoSymbol
add control = Caps_Lock Control_L Control_R
