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diff --git a/src/lib/Xmobar/Plugins/CommandReader.hs b/src/lib/Xmobar/Plugins/CommandReader.hs
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+++ b/src/lib/Xmobar/Plugins/CommandReader.hs
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+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.CommandReader
+-- Copyright   :  (c) John Goerzen
+-- License     :  BSD-style (see LICENSE)
+--
+-- Maintainer  :  Jose A. Ortega Ruiz <jao@gnu.org>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- A plugin for reading from external commands
+-- note: stderr is lost here
+--
+-----------------------------------------------------------------------------
+
+module Xmobar.Plugins.CommandReader where
+
+import System.IO
+import Xmobar.Plugins
+import System.Process(runInteractiveCommand, getProcessExitCode)
+
+data CommandReader = CommandReader String String
+    deriving (Read, Show)
+
+instance Exec CommandReader where
+    alias (CommandReader _ a)    = a
+    start (CommandReader p _) cb = do
+        (hstdin, hstdout, hstderr, ph) <- runInteractiveCommand p
+        hClose hstdin
+        hClose hstderr
+        hSetBinaryMode hstdout False
+        hSetBuffering hstdout LineBuffering
+        forever ph (hGetLineSafe hstdout >>= cb)
+        where forever ph a =
+                  do a
+                     ec <- getProcessExitCode ph
+                     case ec of
+                       Nothing -> forever ph a
+                       Just _ -> cb "EXITED"