ref: be3a0829300690150ee2aa9b1a448308df7ad485
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