I am currently writing a small setup script for a Linux application that needs the user to edit a configuration file before the application is started. I've chosen to make the script simply open the configuration file in Nano, and resume the script afterwards. I do, however, need to detect whether the user saved the changes (to then continue starting the application), or whether he discarded them (which would indicate the user doesn't want to continue).
I have already checked whether this is possible with the returned exit code from Nano, and it apparently isn't - it always returns 0 even if the changes were discarded. Is there another way to figure out whether the file was changed and saved, or will I have to do this in an entirely different way?