Improve doc

diff --git a/doc/rrd-howto.txt b/doc/rrd-howto.txt
index b8c3cc809ff31e6a0f17dc1874ffa742e64cc72d..0013329b0f7302fb898e44eb88ec9ad37975ac8e 100644 (file)
--- a/doc/rrd-howto.txt
+++ b/doc/rrd-howto.txt
@@ -1,5 +1,7 @@
+# Create the exchange file
+touch rrd
 
-# First, create the RRD file
+# Create the RRD file
 rrdtool create vlc.rrd --step 1 "DS:in:GAUGE:10:0:30000" "DS:demux:GAUGE:10:0:30000" "DS:out:GAUGE:10:0:30000" "RRA:AVERAGE:0,5:1:86400"
 
 # Start "listening" the RRD file