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#!/bin/bash
# Prints out the current down network traffic in MB
PREFIX=' '
get_down_traffic()
{
RECEIVE1=0
RECEIVE2=0
IFACES=$(ip -o link show | awk -F': ' '{print $2}')
for IFACE in $IFACES; do
if [ $IFACE != "lo" ]; then
RECEIVE1=$(($(ip -s -c link show $IFACE | tail -n3 | head -n 1 | cut -d " " -f5) + $RECEIVE1))
fi
done
sleep 1
IFACES=$(ip -o link show | awk -F': ' '{print $2}')
for IFACE in $IFACES; do
if [ $IFACE != "lo" ]; then
RECEIVE2=$(($(ip -s -c link show $IFACE | tail -n3 | head -n 1 | cut -d " " -f5) + $RECEIVE2))
fi
done
echo "$PREFIX$(expr $(expr $RECEIVE2 - $RECEIVE1 ) / 1000)KB/s"
}
get_down_traffic
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