#!/bin/bash

LOAD=$( ifstat 120 1 | tail -1 )

IN=$( echo ${LOAD} | awk -F' ' '{print $1}' )
IN=$( bc <<< "scale=0; (${IN} * 1000)/1" )

OUT=$( echo ${LOAD} | awk -F' ' '{print $2}')
OUT=$( bc <<< "scale=0; (${OUT} * 1000)/1" )

# echo " Net: ${LOAD} ${IN} ${OUT}"
rrdtool update network.rrd N:${IN}:${OUT}