add

Utility/Network.hs

@@ -0,0 +1,22 @@
+{- network functions
+ -
+ - Copyright 2012 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Utility.Network where
+
+import Utility.Process
+import Utility.Exception
+
+import Control.Applicative
+
+{- Haskell lacks uname(2) bindings, except in the
+ - Bindings.Uname addon. Rather than depend on that,
+ - use uname -n when available. -}
+getHostname :: IO (Maybe String)
+getHostname = catchMaybeIO uname_node
+	where
+		uname_node = takeWhile (/= '\n') <$>
+			readProcess "uname" ["-n"]