How can I run a program at shutdown

Question

I want a program to run automatically at shutdown (or logout, since this computer has a single user...so I think that will work).
I have searched for an answer, but I can't find it. I can find startup items, but not shutdown items.
Anyone?

Answer 1

Create a 'Stay Open' AppleScript app containing only a quit handler (i.e. no idle handler):
on quit
    -- desired actions here
    continue quit
end quit
(Don't omit "continue quit"). Put it in your Login Items. It will stay running but consuming no CPU and will be triggered when you log out or shutdown.
=-=-=-=-
You could make it dual purpose:
say "Good to see you back [[[emph -]]]brian"
    -- or anything else at login
on quit
    -- desired actions here
    continue quit
end quit