Different ways to kill or process or port or name in MacOS

When you start running rails, java, node, or any applications in MACOS, a process is created.

Sometimes, You may need to stop a single process or all processes for debugging.

Each service or operation in a MACOS creates a process.

Each process contains an Id and name. It throws an error if the same services started again while running. You see below the kind of errors

Rails already running Address already in use - bind(2) (Errno::EADDRINUSE)

You must first kill the process to stop it.

This tutorial explains how to Find and kill the process locking port on Mac.

How to kill port number and stop the process in macOS

There are many ways we can do this.

List out multiple ways in case one of the approaches is not working in Mac version types.

First approach, Find process by port name

netstat -vanp tcp | grep 3000

or find the process by name

ps -aef | grep rails

It gives a list of the process with id or name

You can kill using the below command

kill -9 processid

Second approach, You can use the port number directly for a single process

kill -9 $(lsof -ti:3000)

for multiple ports

kill -9 $(lsof -ti:3000,3200)

third approach using the npx node command, This works on the Node Environment

npx kill-port 3000 3200