kill all processes using a port code example
Example 1: kill process on port
#To list any process listening to the port 8080:
lsof -i:8080
#To kill any process listening to the port 8080:
kill $(lsof -t -i:8080)
#or more violently:
kill -9 $(lsof -t -i:8080)
Example 2: 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)