kill a process on a port linux 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 port

sudo kill -9 $(sudo lsof -t -i:8080)

Example 3: ubuntu kill process on a port

sudo kill -9 $(sudo lsof -t -i:4000)