# How to find the PID of a process using a given port?

Sometimes you have a process you lost the PID, and would like to kill it.

You can use `top` (or better `htop`) to search for your process name and press `k` to kill it.
But this isn’t optimal when you aren’t sure of its name.
A better alternative is to search by the port opened, for example port 80:

```bash
sudo lsof -i :80
```

Remember to use `sudo`. The process PID will be in the second column.
Happy process killin’ 👾