ref: d4dea2defccb349c3a6833bcd10ebf16c6cea49d
dir: /lib/System/Process.hs/
module System.Process(callCommand) where import Prelude(); import MiniPrelude import Control.Monad(when) import Foreign.C.String foreign import ccall "system" systemc :: CString -> IO Int callCommand :: String -> IO () callCommand cmd = do r <- withCAString cmd systemc when (r /= 0) $ error $ "callCommand: failed " ++ show r ++ ", " ++ show cmd