Answers for "how to kill a port in use"

kill app at 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)

kill process on port windows

netstat -ano | findstr "PORT_NUMBER"

taskkill /PID PORT_NUMBER /f

close all localhost connections

netstat -ano | findstr :yourPortNumber

taskkill /PID typeyourPIDhere /F

stop a process running on a port

# Print PID of process bound on that port.
fuser 8080/tcp

# Kill that process
fuser -k 8080/tcp