# UDP errors
# Francesco Latini
# www.francescolatini.net

while true; do
        # imposto le variabili
        date=`date +%H:%M:%S`;
        err=`netstat -su | grep errors | awk '{print $1}'`;
        log=/var/tmp/udp_errors;

        # calcolo il delta
        last=`tail -1 ${log} | awk '{print $2}'`;
        delta=`echo "${err}-${last}" | bc`;

        # loggo il delta
        echo -e "${date}\t${err}\t${delta}" >> ${log};

        # attendo 1 minuto
        sleep 60;
done