Answers for "macos check port in use"

port finding in macos

$ lsof -nP -iTCP -sTCP:LISTEN | grep 8000

netstat listening port 8080 mac

lsof -nP -iTCP:$PORT | grep LISTEN

running ports in mac

sudo lsof -PiTCP -sTCP:LISTEN

check all the ports in use mac

$ npx kill-port 3000 8080 8081

Process on port 3000 killed
Process on port 8080 killed
Process on port 8081 killed