[Haskell-cafe] Execution of external command

Yitzchak Gale gale at sefer.org
Thu Dec 13 08:36:48 EST 2007

> so,
> do (stdin,stdout,stderr,ph) <- runInteractiveCommand "script param"
>    waitForProcess ph
> when i should read stdout? before or after waitForProcess?

If you are sure that your script will behave nicely
(or don't care if it doesn't), how about just:

(_, h, _, _) <- runInteractiveCommand "script params"
output <- hGetContents h


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