How to fix `"Error: listen EADDRINUSE: address already in use::: 8000"` while using nodejs in two steps.
Or Kill node process running under certain port.
Goto the command line and find the "PID" of the process:
$ lsof -i tcp:8000 //where the port you want to kill is 8000
The above command opens a list of all processes with their "PIDs".
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