Test Open Port

test-tcp.sh

#!/bin/bash

PORT=80
printf "\n===\nNEW SCAN\n===\n" >> ./res.txt

while [ $PORT -le 1000 ]
do
  curl --max-time 1 http://portquiz.net:$PORT 1>> ./res.txt 2> /dev/null
  if [ $? -eq 0 ]; then
    printf "x"
  else
    printf "."
  fi
  PORT=$(( $PORT + 1 ))
done