You could pre compile the script with osacompile if you want, but I wouldn't bother. I think checking the command runtime would be a mistake. If you expect the

You could pre compile the script with osacompile if you want, but I wouldn't bother. I think checking the command runtime would be a mistake. If you expect the command to take a long time, and it finished in just a second or two, you probably want to be notified immediately rather than eventually wondering many minutes later why you weren't. And if you expect the command to take only a second or two, you are a lot less likely to be tabbing away, so you won't be notified anyway.