Resolving "Port Already in Use" Error: How to Identify Port Usage and Terminate Processes

If you encounter the error message "This port is already in use", it means that the specified port is currently being used by another process. To resolve this issue, you can follow the steps below:

Step 1: Install net-tools
sudo apt install net-tools
Step 2: Get the list of ports and associated processes
netstat -tulpen
Step 3: Kill the process using the specified port
kill -9 PID

Replace "PID" with the process ID (PID) of the process using the port you want to free up.

By following these steps, you will be able to identify the processes using specific ports and terminate them if necessary, allowing you to free up the port for other applications or services.

Published @ Nov 2022