[SCRIPT] Bandwidth persistence for OpenWRT WIP

netomx

Just to share a code. OpenWRT does not save the WAN data, and it is useful for metered connections. This code will save it on a file, and will remember each boot.

Todo:

1. GUI
   
2. Delete old bandwidth
   

#!/bin/sh

if [ -f /tmp/bw ]; then
        echo "Process already running, stats:"
        TX=$( cat /root/tx )
        RX=$( cat /root/rx )
        echo TX $(( $TX / 1048576 )) MB
        echo RX $(( $RX / 1048576 )) MB
        exit 1
fi

touch /tmp/bw

if [ -f /root/tx ]; then
        TX=$( cat /root/tx )
        RX=$( cat /root/rx )
        OLDBW=1
fi

while :
do
        TXX=$( ifconfig eth0 | grep bytes | cut -d \: -f 3 | cut -d \( -f 1 )
        RXX=$( ifconfig eth0 | grep bytes | cut -d : -f 2 | cut -d \( -f 1 )

if [ $OLDBW ]; then
        TXX=$((TX + TXX))
        RXX=$((RX + RXX))
fi
#For debug purposes:
#echo TX $(( $TXX / 1048576 )) MB
#echo RX $(( $RXX / 1048576 )) MB
echo $TXX > /root/tx
echo $RXX > /root/rx
sleep 10
done