ref: 2c5c10e4e1abf275b0caa7dedea3e92cdc8a6b54
dir: /lib/System/Cmd.hs/
module System.Cmd(system) where import Foreign.C.String import System.Exit foreign import ccall "system" c_system :: CString -> IO Int system :: String -> IO ExitCode system s = do r <- withCAString s c_system return $ if r == 0 then ExitSuccess else ExitFailure r