[Haskell-beginners] What should I use (the equivalent of Windows schtasks) to schedule a task to run?

[Hong Yang]

I searched "schedul" on hayoo!, but had no clue. It seems that I can use
scheduleEventAt from Control.Monad.Event.Classes. But what is type "e"? It
seems like an event. How do I define an event?

I have not learned Monad yet. Can some one give me a simple example? Suppose
I want to run an external program "pg" which in Haskell's language has the
type of String -> IO ().

Thanks,

Hong
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