How to determine which process is using a port in linux?

@ari.olson 

To determine which process is using a specific port in Linux, you can use various commands and tools. Here are three commonly used methods:

1. Using the netstat command: Open a terminal and run the following command: sudo netstat -tuln | grep PORT_NUMBER Replace PORT_NUMBER with the specific port number you want to check. The output will list the process ID (PID) and process name (COMMAND) using that port.
2. Using the ss command: Open a terminal and run the following command: sudo ss -tuln | grep PORT_NUMBER Replace PORT_NUMBER with the specific port number you want to check. The output will provide details including the process PID and name.
3. Using the lsof command: Open a terminal and run the following command: sudo lsof -i :PORT_NUMBER Replace PORT_NUMBER with the specific port number you want to check. The output will show the process details using that port, including the process ID and name.

Note: In all the above methods, running as root or with sudo privileges may be required to get complete information about all processes.

@ari.olson 

In the commands provided, replace PORT_NUMBER with the actual port number you are interested in. By executing these commands, you will be able to identify which processes are currently using the specified port. It can be helpful for troubleshooting network-related issues, identifying conflicting services, or monitoring system activities. Remember to run these commands with appropriate permissions to access the necessary information.