change_es_systems This script lets you change the es_systems.cfg file used to display systems using your controllers.
v4 TMNTturtlguy - July 9 2017
place script in /home/pi/RetroPie/retropiemenu/ In order to run the script you must create the following folders: /opt/retropie/configs/all/emulationstation/es_systems Then within that folder create these 6 folders: All Consoles Customs Favorites Hacks Neocapcom Example of the full path: /opt/retropie/configs/all/emulationstation/es_systems/Favorites Within each folder you have created place a es_systems.cfg file. The file needs to be named the same in each folder, but the systems can be different. Emulationstation will automatically restart.
Special Thanks to @meleu and @cyperghost for their hard work helping trouble shoot this script and comming up with a way to restart ES.