Paste #238068

#!/bin/bash
ip=$l
tcpscan()
{
ip=$i
for port in $(seq 1 65535);
do
timeout 1 bash -c "</dev/tcp/$ip/$port && echo Port $port is open ||echo Port $port is closed > /dev/null" 2>/dev/null || echo Connection timeout > /dev/null
done
}
tcpscan $ip