check port in use mac code example

Example 1: mac terminal find process by port

sudo lsof -i tcp:3000

Example 2: port finding in macos

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

Example 3: running ports in mac

sudo lsof -PiTCP -sTCP:LISTEN

Example 4: 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