18 lines
513 B
Haskell
18 lines
513 B
Haskell
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import Control.Monad
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import Data.Char
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import System.Exit
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import System.IO
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import System.Process
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main = do hw <- openFile "po003.out" WriteMode
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ph <- runProcess "pwd" [] (Just "/dev") Nothing Nothing (Just hw) Nothing
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ec <- waitForProcess ph
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hClose hw
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unless (ec == ExitSuccess) $ error "pwd failed"
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hr <- openFile "po003.out" ReadMode
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output <- hGetContents hr
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putStrLn ("Got: " ++ show (filter (not . isSpace) output))
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hClose hr
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