ref: 7ecf112fbeeb1e5814fbad231ba8159f22052d19
dir: /lib/System/Process.hs/
module System.Process(callCommand) where
import Prelude
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