Execute an .sh file using bindsym

This fixes the error. But it will still not work, because you cannot bind modifier keys (Shift, Control, Alt, Super) by their keyboard symbol. [You have to use the keyboard codes in that case.](https://faq.i3wm.org/question/2854/keybinding-for-the-both-shifts-keys/?answer=2861#post-id-2861)

Hmm doesn't work with this solution and returns 'unexpected <modifier> Mod41+Shift exec /home/yourname/.i3/lang_change.sh' Mod41 occurs because it is $mod is set on Mod4.

So with xmodmap -pke | grep Alt , i saw that the keycode of Alt_L Meta_L is 64. Then i wrote this in config but still has a problem with the + symbol. bindcode 64+Shift exec /home/me/.i3/lang_change.sh

With `bindcode` only the last key is given by its code, modifiers for this key are still given by their name (`Mod1`, `Mod4`, `Shift`, `Control`). So Alt+Shift (hold Alt, then press Shift) has to be written as `Mod1+50` (Shift_L) and/or `Mod1+62` (Shift_R). `Shift+64` would be hold Shift, press Alt.

Thank you.Now it works.