I want a widget (or a 1-click app) that simply launches a script, and then quits automatically when the script completes.

I'll supply the (shell) script.

Anyone know of something that does exactly that?
Most of the apps I've found open menus, browse filesystems, etc.. to launch a simple script.

Others open terminal windows (not optimal, though acceptable) but then don't auto-close them when the script exits.

I just want a very simple widget (or 1-click app).
I will write an app to do this if necessary, but surely someone already has one out there??

Thanks