> For the complete documentation index, see [llms.txt](https://ploegert.gitbook.io/til/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ploegert.gitbook.io/til/os/mac/find-the-process-using-a-specific-port.md).

# Find The Process Using A Specific Port

The `netstat` utility is often recommended for finding the PID (process ID) bound to a specific port. Unfortunately, Mac's version of netstat does not support the `-p` (process) flag. Instead, you'll want to use the `lsof` utility.

```bash
$ sudo lsof -i tcp:4567
```

Running this will produce a nicely formatted response that tells you several pieces of information about the process bound to `:4567` including the PID.

[source](https://stackoverflow.com/questions/3855127/find-and-kill-process-locking-port-3000-on-mac)