.Xmodmap
1 keycode 135 = Mode_switch 2 keysym k = k K Left 3 keysym j = j J Down 4 keysym l = l L Right 5 keysym h = h H Up 6 7 remove Lock = Caps_Lock 8 remove Control = Control_R 9 keysym Control_R = Caps_Lock 10 keysym Caps_Lock = Control_R 11 add Lock = Caps_Lock 12 add Control = Control_R
exec xmodmap ~/.Xmodmap
原文：https://www.cnblogs.com/jeroen/p/9149897.html