misterch0c

while true; do
    ip=$(zmap --verbosity 0 -p 80 -N 1 -q -o -)
    version=$(curl -I -s -m 4 $ip | grep -i 'X-Powered-By' | awk -F ":" '{print $2}')
    if [ "$version" != "" ];then
        echo "$ip:$version" >> log.txt
    fi
done