Hey halftux,

what kind of prob'ems with sudoers.file you ran into?
In general you put a file with all.your desired applications and scripts into /etc/sudoers.d and run once update-sudoers from postinstall script. Then you are able/allowed to call that app with 'sudo /opt/genwall/genwall' and there is no need for "sudoing" like genwall_desktop.sh.
For your new.sh sessions IDK, but you are safe to move out your desired sh actions into dedicated scripts and add/allow them also into sudoers file (worked for me. You need to call them then with 'sudo ,yScript inside your app). Also you might run complete GUI as user and only run scripts needing root access. Just as a reminder
About root password without rootsh I really do not know as it is too long time ago