dns lookup script with loop.. https://foxutech.com

dnslookup.sh

#!/bin/bash

hostname=foxu.tech
sleep_time=2
count=0
success_count=0
max_count=$((1*6))

while [ $count -lt $max_count ];
do
    echo -n "$count/$max_count: "
    date
    nslookup $hostname
    status=$?
    if [ "$status" == "0" ]; then
        success_count=$(($success_count + 1))
        if [ $success_count -gt 1 ]; then
            break
        fi
    fi
    count=$(($count + 1))
    echo "Sleeping $sleep_time"
    sleep $sleep_time
    done