Description:

You're troubleshooting a service startup issue on a Linux host. The program myapp fails to start, returning a generic error indicating that the address is already in use. There's no documentation for the service and the program doesn't log any useful information about which port it expects to listen on.

Tasks:

• Identify which port the program myapp is attempting to listen on.
• Determine which process is currently listening on that port.
• Terminate the other process so that myapp can start successfully.