SHELL

kill port in mac

npx kill-port 8080

kill port mac

kill -9 $(sudo lsof -ti:3000) # force kill one port
kill -9 $(sudo lsof -ti:3000,3001) # force kill multiple port

kill port mac

npx kill-port port_number

e.g,
npx kill-port 5001

kill port mac

kill -9 $(lsof -ti:3000,3001)

kill port 8000 mac

lsof -P | grep ':PortNumber' | awk '{print $2}' | xargs kill -9

Replace PortNumber with the actual port that you want to kill