#!/bin/sh

if [ $# -lt 2 ]; then
        echo "Usage sample:  check_network_traffic.sh [interface] [monitor seconds]"
        exit 0;
else
        if ! [ "$2" -eq "$2" 2> /dev/null ]
        then
                echo "Usage sample:  check_network_traffic.sh [interface] [monitor seconds]"
                echo "Message: [monitor seconds] integer only"
                exit 0
        fi

        startDATE=`date +%Y-%m-%d_%H:%M:%S`
        echo ===== Monitor start date time:[ $startDATE ] =====

        iftop -i $1 -PnNt -s $2 -L 1000

        endDATE=`date +%Y-%m-%d_%H:%M:%S`
        echo ===== Monitor end date time: [ $endDATE ] =====
fi