How to create a KODI entry to run a script?

[fzinken]

@Bosse_B

advancedsettings.xml

Wrong place, keymappings go into userdata/keymaps/ see
https://kodi.wiki/view/Keymap#Defaults

Also very good to read for changing keymaps (even so title is for long press)

OSMC Remote - Long Press Keymap Guide

Introduction This guide is intended to serve as a reference for users who want to modify the button behavior of their OSMC remote controls. This is not intended as a general guide on key mapping in Kodi, or a thread for general keymap questions. If you need to familiarize yourself with keymaps, or what things you can do with them your first step should be Kodi’s wiki on the subject. OSMC Legacy Behaviour The first two generations of the OSMC remote using OSMC prior to the March 2020 update …

@Bosse_B

BTW, if I edit advancedsettings.xml, how do I make it take effect? Do I have to reboot the osmc box or is there a simpler way?

For changes to most files it is recommended to first stop Kodi and start afterwards.
sudo systemctl stop mediacenter
sudo systemctl start mediacenter