diff --git a/utils/rpcgrab.sh b/utils/rpcgrab.sh
index 3b86c198afc1525d150c1fe4dce1c3f09fdfca7e..2fc1b24896b4eaeaade467d3e89049afc020b02a 100644
--- a/utils/rpcgrab.sh
+++ b/utils/rpcgrab.sh
@@ -1,4 +1,15 @@
 #!/bin/sh
+#
+# EMULAB-COPYRIGHT
+# Copyright (c) 2005 University of Utah and the Flux Group.
+# All rights reserved.
+#
+
+#
+# Hack script to extract the latest temp/power/current values from the RPC
+# power controller logs.  Used to generate data for the cricket grapher.
+# Uses the ancient Utah "reverse cat" tac program.
+#
 
 tac=/usr/site/bin/tac