If you use ubuntu, it's an option in the "Keyboard" preferences pane. There are several other ways, but the one I've found most reliable is xmodmap: https://g

If you use ubuntu, it's an option in the "Keyboard" preferences pane. There are several other ways, but the one I've found most reliable is xmodmap: https://github.com/jemfinch/config/blob/master/.xmodmap https://github.com/jemfinch/config/blob/master/.xmodmap (first three lines) Put that in ~/.xmodmap and run "xmodmap ~/.xmodmap" from your .xsession or similar.