diff --git a/tutorial/lisa2010/rrd-by-example/traffic/ifbyteget.sh b/tutorial/lisa2010/rrd-by-example/traffic/ifbyteget.sh
--- /dev/null
@@ -0,0 +1,27 @@
+#!/bin/sh
+# use from cron
+# * * * * * /path/to/ifbyteget.sh eth0
+
+PATH=/bin:/usr/bin
+export PATH
+
+cd /home/oposs/public_html/stats
+
+if [ ! -f $1.rrd ]; then
+
+rrdtool create $1.rrd \
+ --step=60 \
+ DS:in:DERIVE:70:0:100000000 \
+ DS:out:DERIVE:70:0:100000000 \
+ RRA:AVERAGE:0.5:1:1500 \
+ RRA:AVERAGE:0.5:60:10000 \
+ RRA:MIN:0.5:60:10000 \
+ RRA:MAX:0.5:60:10000 \
+ RRA:AVERAGE:0.5:1440:1000 \
+ RRA:MIN:0.5:1440:1000 \
+ RRA:MAX:0.5:1440:1000
+fi
+
+rrdtool update $1.rrd \
+ N:`grep $1: /proc/net/dev \
+ | sed 's/.*://' | awk '{print $1":"$9}'`