diff --git a/tools/uniquewordcount b/tools/uniquewordcount
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--- /dev/null
+++ b/tools/uniquewordcount
@@ -0,0 +1,7 @@
+#!/bin/bash
+#
+# list words in a file with a uniqness count to identify typing mistakes.
+# Usage: ./uniquewordcount MyFile | more
+#        ./uniquewordcount < MyFile > UniqueWordsWithCount
+#
+(echo "$1"; cat) | tr -cs "[:alpha:]" "\n" | sort | uniq -c