Is there a way for me to create an installer that runs a shell script to upload a firmware update to an arduino that doesn't involve using the IDE? I have a thing that I make that sometimes needs a firmware update, and sometimes the people who would apply the firmware update wouldn't be able to apply the update from the IDE. I'm guessing it's something to do with avrdude, but try as I might to learn how, I just haven't had any luck on my own.
I can handle the "create an installer that runs a shell script" part.