diff --git a/talks/fisl12/ex/graph-pdf.sh b/talks/fisl12/ex/graph-pdf.sh
--- /dev/null
@@ -0,0 +1,7 @@
+#!/bin/sh
+rrdtool graphv first.pdf \
+ --title="FISL12 RRDtool Demo" \
+ --start=1199999000 --end=1200001300 \
+ --lower-limit=0 --imgformat=PDF \
+ DEF:t=first.rrd:temperature:AVERAGE \
+ 'AREA:t#880011:Temperature'