Tilde key on Mac Air with Ubuntu

How to get backtick (`) and tilde (~) symbols in Ubuntu installed on Macbook Air with EU keyboard (instead of backslash (\) and pipe (|) symbols that show up by default):

1. Run xev and press the tilde key. Find the keycode assosiated with this key in the output.

2. Change or create file ~/.xmodmaprc and add the following text to it:


keycode <keycode from xev output> = grave asciitilde 

3. Run: xmodmap ~/.xmodmaprc

The method is taken from here http://stackoverflow.com/questions/17757232/switch-tab-and-backtick-keys-ubuntu-linux