-import Control.Concurrent
-import Control.Exception (evaluate)
-import Data.List (intercalate)
-import Data.Time (formatTime, getZonedTime)
-import System.Exit
-import System.Locale (defaultTimeLocale, rfc822DateFormat)
-import System.Process
-import System.IO (hClose, hGetContents, hPutStr)
+import Control.Concurrent ( forkIO, newEmptyMVar, putMVar, readMVar )
+import Control.Exception ( evaluate )
+import Control.Monad ( liftM )
+import Data.List ( intercalate )
+import Data.Time ( formatTime, getZonedTime )
+import System.Exit ( ExitCode(..) )
+import System.Locale ( defaultTimeLocale, rfc822DateFormat )
+import System.Process ( runInteractiveProcess, waitForProcess )
+import System.IO ( hClose, hGetContents, hPutStr )