#!/bin/sh

miss_count=0
check_network()
{
    miss_count=$(($miss_count+1))
    local a=$(($miss_count % 3))
    echo "a=$a h"  
    if [ $a -eq 0 ]
    then
        echo "a is zero"
    fi
    if [ "${miss_count}" -gt "3" ] && [ "$a" -eq "0" ]
    then
        echo "4G card is reset, ${miss_count}"

    fi
}



i=0
while :
do
  sleep 2
  check_network 
done