resolve list of names

resolve.sh

#!/bin/bash
# because Qualys vm can only take names!?!
# usage: ./resolve.sh filename nameserver(optional)
for i in `cat $1`;
do
        answer=$(nslookup $i $2)
        resp_code=$(echo $?)

        if [ $resp_code -eq "0" ]
        then
                name=$(echo "$answer" | grep ^Name | head -n1 | awk '{print $2}')
                # ip=$(echo "$answer" | grep -A10 answer | grep Address | head -n1 | awk '{print $2}')
		ip=$(echo "$answer" | grep -A10 ^Name | grep Address | head -n1 | awk '{print $2}')
                echo "$i,$name,$ip"
        else
		echo "$i,,"
	fi
done