CMD & control keys swap in ubuntu

Question

I have an Apple keyboard with a cmd key which I\'m trying to swap with the control key.

From googleing the problem and searching across the forum I came with a several s

Answer 1

This solution for change the keyboard permanently is better than other solution because for example if you change the language or reset your computer you must renew the Xmodmap command for update keyboard

but by this solution " Permanent xmodmap in Ubuntu 13.04 " your keyboard's map will change for ever.