How about remapping the keys? **xmodmap** should do the trick there.

Assuming that your command button is replaced with meta (I can't help you there, I don't own a Mac) this should work for you:

1) Make <code>~/.Xmodmap</code> file.

2) Write  this into it:

<code>remove control = Control_L
remove mod4 = Super_L
add control = Super_L
add mod4 = Control_L</code>

3) put <code>xmodmap ~/.Xmodmap</code> into your <code>~/.xinitrc</code> file (make it if you don't have it)

This should now be executed by xmodmap at startup.

You can learn more abour xmodmap [xmodmap ArchWiki][1].


  [1]: https://wiki.archlinux.org/index.php/Xmodmap