<pre><code class="lang-bash">sudo lsof -PiTCP -sTCP:LISTEN
</code></pre>
<p>will get an answer like this</p>
<pre><code class="lang-bash">..
Dropbox   684 user   82u  IPv4 0xXXXX   0t0  TCP *:17500 (LISTEN)
Dropbox   684 user   83u  IPv6 0xXXXX   0t0  TCP *:17500 (LISTEN)
Dropbox   684 user  122u  IPv4 0xXXXX   0t0  TCP localhost:17600 (LISTEN)
Dropbox   684 user  125u  IPv4 0xXXXX   0t0  TCP localhost:17603 (LISTEN)
...
</code></pre>


```bash
sudo lsof -PiTCP -sTCP:LISTEN
```

will get an answer like this

```bash
..
Dropbox   684 user   82u  IPv4 0xXXXX   0t0  TCP *:17500 (LISTEN)
Dropbox   684 user   83u  IPv6 0xXXXX   0t0  TCP *:17500 (LISTEN)
Dropbox   684 user  122u  IPv4 0xXXXX   0t0  TCP localhost:17600 (LISTEN)
Dropbox   684 user  125u  IPv4 0xXXXX   0t0  TCP localhost:17603 (LISTEN)
...
```

Faulty Developer

Faulty Developer

Bash command to list open ports in macOS