[Request] Run command/script upon specific error

[Matteoki]

Is it possible to run a cmd line upon a specific error? (Like Authorization error, or "tweets protected" error) , It would come in handy a lot for me since in my script I need to check for each user if the gallery-dl output will give an error or not, if it doesn't I can proceed with the actual archive command, and this is a very clunky solution. Thanks