Dork's port

~$ gedit ~/.Xmodmap clear control clear mod1 keycode 37 = Alt_L Meta_L keycode 64 = Control_L add control = Control_L Control_R add mod1 = Alt_L Meta_L ~$ xmodmap ~/.Xmodmap reference : https://askubuntu.com/questions/93624/how-do-i-swap-left-ctrl-with-left-alt-on-my-keyboard