====== Ubuntu - Processes - Kill a process which occupies a port ======

This example shows how to detect and kill a process running on port 500 on Ubuntu machine.

1. Verify that port 500 is occupied on the machine:

<code bash>
netstat -an | grep 500
</code>

  * **-a** is for listing active connections 
  * **-n** is to disable DNS lookup and only show IP address.


2.  Show the ID of the process that uses port 500:

<code bash>
sudo fuser 500/udp
</code>


3.  Kill the process:

<code bash>
sudo fuser -k 500/udp
</code>