hi all, i want to make a basic temperature graph with rrdtool.
as a newbie i've started with reading the tutorials and formed below commands:
rrdtool create temp.rrd --step 10 \
DS:temp:GAUGE:20:0:50 RRA:AVERAGE:0.5:360:24

rrdtool update temp.rrd N:26
sleep 10 && rrdtool update temp.rrd N:25
sleep 10 && rrdtool update temp.rrd N:24
sleep 10 && rrdtool update temp.rrd N:23
sleep 10 && rrdtool update temp.rrd N:24

rrdtool graph temp.gif -s -1d \
-v "celcius" --title "my title" \
COMMENT:"`date`" \
DEF:example=temp.rrd:temp:AVERAGE

after typing above commands i've looked at the temp.gif but there isn't any
values (so lines) in the graph. i'd be so appreciated if somebody could
point me my mistake.

best regards.


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