netstat

Show Port Usage

• https://www.cyberciti.biz/faq/what-process-has-open-linux-port/
• https://www.tecmint.com/find-out-which-process-listening-on-a-particular-port/
• https://stackoverflow.com/questions/3855127/find-and-kill-process-locking-port-3000-on-mac

% netstat -anpv tcp | grep <Port>

or

% lsof -i tcp:<Port>

Get The Process Name

• https://superuser.com/questions/632979/if-i-know-the-pid-number-of-a-process-how-can-i-get-its-name

% ps -p <PID> -o command