ref: f1650040b7185326951972b827e64acd655628cb
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