Mate Port Linux
kill -9 $(lsof -t -i:8080)
Combative Cobra
kill -9 $(lsof -t -i:8080)sudo lsof -i tcp:80
#or
sudo lsof -t -i tcp:80 | sudo xargs killsudo kill -9 $(sudo lsof -t -i:8000) #A One-liner to kill only LISTEN on specific port:
kill -9 $(lsof -t -i:3000 -sTCP:LISTEN)