how to kill a process at a port linux code example

Example 1: kill process on port

#list process running on specified port (here 80, change to your port)
sudo lsof -i:80

#kill process on specified port (here 80, change to your port)
sudo kill $(sudo lsof -t -i:80)

Example 2: kill a process at a port

fuser -k 8080/tcp