network monitoring shell script

netmon.sh

#!/bin/bash
COUNT=10
while :
do
    if [ $COUNT = 10 ]
    then
        printf "+--------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ \n"
        printf "|  TIME  |ESTAB|LISTN|T_WAT|CLOSD|S_SEN|S_REC|C_WAT|F_WT1|F_WT2|CLOSI|L_ACK| \n"
        printf "+--------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ \n"
        COUNT=0
    fi
    COUNT=`expr $COUNT + 1`
    TIME=`/bin/date +%H:%M:%S`
    printf "|%s" ${TIME}
    netstat -an | \
    awk 'BEGIN {
        CLOSED = 0;
        LISTEN = 0;
        SYN_SENT = 0;
        SYN_RECEIVED = 0;
        ESTABLISHED = 0;
        CLOSE_WAIT = 0;
        FIN_WAIT_1 = 0;
        FIN_WAIT_2 = 0;
        CLOSING = 0;
        LAST_ACK = 0;
        TIME_WAIT = 0;
        OTHER = 0;
        }

        $6 ~ /^CLOSED$/ { CLOSED++; }
        $6 ~ /^CLOSE_WAIT$/ { CLOSE_WAIT++; }
        $6 ~ /^CLOSING$/ { CLOSING++; }
        $6 ~ /^ESTABLISHED$/ { ESTABLISHED++; }
        $6 ~ /^FIN_WAIT1$/ { FIN_WAIT_1++; }
        $6 ~ /^FIN_WAIT2$/ { FIN_WAIT_2++; }
        $6 ~ /^LISTEN$/ { LISTEN++; }
        $6 ~ /^LAST_ACK$/ { LAST_ACK++; }
        $6 ~ /^SYN_SENT$/ { SYN_SENT++; }
        $6 ~ /^SYN_RCVD$/ { SYN_RECEIVED++; }
        $6 ~ /^TIME_WAIT$/ { TIME_WAIT++; }

        END {
            printf "| %4d| %4d| %4d| %4d| %4d| %4d| %4d| %4d| %4d| %4d| %4d|\n",ESTABLISHED,LISTEN,TIME_WAIT,CLOSED,SYN_SENT,SYN_RECEIVED,CLOSE_WAIT,FIN_WAIT_1,FIN_WAIT_2,CLOSING,LAST_ACK;
        }'
    sleep 2
done