ref: e3abe7df7375a8deb2b2f6bc313887e2818c7c26
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