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diff --git a/src/lib/Xmobar/Plugins/Monitors/Uptime.hs b/src/lib/Xmobar/Plugins/Monitors/Uptime.hs
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+------------------------------------------------------------------------------
+-- |
+-- Module      : Plugins.Monitors.Uptime
+-- Copyright   : (c) 2010 Jose Antonio Ortega Ruiz
+-- License     : BSD3-style (see LICENSE)
+--
+-- Maintainer  : jao@gnu.org
+-- Stability   : unstable
+-- Portability : unportable
+-- Created: Sun Dec 12, 2010 20:26
+--
+--
+-- Uptime
+--
+------------------------------------------------------------------------------
+
+
+module Xmobar.Plugins.Monitors.Uptime (uptimeConfig, runUptime) where
+
+import Xmobar.Plugins.Monitors.Common
+
+import qualified Data.ByteString.Lazy.Char8 as B
+
+uptimeConfig :: IO MConfig
+uptimeConfig = mkMConfig "Up <days>d <hours>h <minutes>m"
+                         ["days", "hours", "minutes", "seconds"]
+
+readUptime :: IO Float
+readUptime =
+  fmap (read . B.unpack . head . B.words) (B.readFile "/proc/uptime")
+
+secsPerDay :: Integer
+secsPerDay = 24 * 3600
+
+uptime :: Monitor [String]
+uptime = do
+  t <- io readUptime
+  u <- getConfigValue useSuffix
+  let tsecs = floor t
+      secs = tsecs `mod` secsPerDay
+      days = tsecs `quot` secsPerDay
+      hours = secs `quot` 3600
+      mins = (secs `mod` 3600) `div` 60
+      ss = secs `mod` 60
+      str x s = if u then show x ++ s else show x
+  mapM (`showWithColors'` days)
+       [str days "d", str hours "h", str mins "m", str ss "s"]
+
+runUptime :: [String] -> Monitor String
+runUptime _ = uptime >>= parseTemplate