#!/bin/bash

if [ "$1" == "" ]

then

        v=10

        echo -e "\n loop is $v syn_recv checking!!!"

        echo -e " example) ./syn_check.sh loop_number"

        echo -e " after 3 second, and starting... "

        sleep 3

else

        v=$1

        r=${v//[0-9]/}

        if [ -z "$r" ]; then

                echo -e "\n loop is $v syn_recv checking!!!"

                echo -e " after 3 second, and starting... \n"

                sleep 3

        else

                echo -e "\n $v is not number. and loop is 10"

                v=10

                echo -e " after 3 second, and starting... "

                sleep 3

        fi

fi

i=1

while [ $i -le $v ]

do

        # # netstat syn_recv check

        echo -e "\n #loop  count - $i "

        echo -e " netstat -anp | grep -i syn_recv "

        echo -e " --------------------------------"

        STR1=`netstat -anp | grep -i syn_recv`

        echo -e "$STR1"

        if [  $i -lt $v ];then echo -e "\n waiting 1 second...";fi

        sleep 1

        i=$(($i+1))

done

echo -e  "\n"