Could you clarify what you mean by "force quiet" (did you mean "force quit"?), and how exactly that is being done to a Perl program?

Since you say you want to run a bat file then I guess you are running on Windows (unless its something you keep in the bat cave), but please confirm the OS - that can be significant, particularly when suggesting solutions involving signals.

Some Microsoft Windows actions call the TerminateProcess API, and that will just kill the application stone dead without any chance of recovery or tidyup, so it could be that there is no option but to tell the users to stop doing it. Finding out why they are killing the process might be a good move.