diff --git a/tests/testCheck.sh b/tests/testCheck.sh
new file mode 100755
index 0000000..ef583e0
--- /dev/null
+++ b/tests/testCheck.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+#
+# A script to easily compare the output of old test results and new.
+#
+if [ "$1" == "" ]
+then
+	echo "USAGE:  testCheck.sh <test num>"
+else
+	cmd="test$1.sh"
+	out="test$1.out"
+	$cmd
+	if cmp -s tmp.out $out
+	then
+		echo "$cmd OK -- output identical"
+	else
+		echo "$cmd Problem!" 
+		echo
+		echo "TEST ======================================================"
+		echo
+		cat tmp.out
+		echo "EXPECTED =================================================="
+		echo
+		cat $out
+		echo
+		echo "DIFF ======================================================"
+		echo "diff tmp.out $out"
+		echo "< = test(new) = tmp.out" 
+		echo "> = expected  = $out" 
+		echo
+		diff tmp.out $out
+		echo
+	fi
+fi