diff --git a/examples/uniquify.hs b/examples/uniquify.hs
new file mode 100644
index 000000000..af838bce0
--- /dev/null
+++ b/examples/uniquify.hs
@@ -0,0 +1,21 @@
+#!/usr/bin/env runhaskell
+{-|
+Uniquify journal entries based on some id in the description. Reads the
+default or specified journal, or stdin.
+
+Usage: uniquify.hs [-f JOURNALFILE | -f-]
+|-}
+
+import Data.List
+import Hledger
+import Hledger.Cli
+
+main = do
+  opts <- getHledgerOpts
+  withJournalDo opts uniquifyAndPrint
+
+uniquifyAndPrint :: CliOpts -> Journal -> IO ()
+uniquifyAndPrint opts j@Journal{jtxns=ts} = print' opts j{jtxns=uniquify ts}
+    where
+      uniquify = nubBy (\t1 t2 -> extractId (tdescription t1) == extractId (tdescription t2))
+      extractId desc = desc -- extract some part that's supposed to be unique