cd /www
in=$(ifconfig wlan1 |grep bytes|cut -d":" -f2|cut -d" " -f1)
out=$(ifconfig wlan1 |grep bytes|cut -d":" -f3|cut -d" " -f1)
echo $in "   " $out
t=$in":"$out;
rrdtool update /www/iptraf.rrd --template in:out N:$t;

rrdtool graph /www/iptraf1.png --start -12h --end now \
--vertical-label "Traffic B/s"    \
 -a PNG \
DEF:temp1=/www/iptraf.rrd:in:AVERAGE \
DEF:temp2=/www/iptraf.rrd:out:AVERAGE \
LINE1:temp1#FF0000:"in" \
LINE1:temp2#00FF00:"out"



#rrdtool create iptraf.rrd              \
#                DS:in:COUNTER:600:U:12500000      \
#                DS:out:COUNTER:600:U:12500000     \
#                RRA:AVERAGE:0.5:1:600                \
#                RRA:AVERAGE:0.5:6:700                \
#                RRA:AVERAGE:0.5:24:775               \
#                RRA:AVERAGE:0.5:288:797              \

# rrdtool fetch /www/iptraf.rrd AVERAGE;