whoport

A simple nodejs based CLI tool to check if and which PID uses a given port number and optionally kill it.

Installation

npm i -g whoport

Compatibility

Tested on:

• macOS 10.10.5, 10.11.4, 10.14.6
• Windows 7
• Debian 7.8 (wheezy)

Due to the use of netstat for Windows operating systems, whoport should also work on Windows Vista and above. (thanks @lewisje for the hint!)

How it works

• OSX uses lsof to check for processes and kill -9 to kill one or more PIDs.
• Windows uses netstat to check for processes and taskkill to kill the PID.

Usage

# check and display PID and process name if present
whoport 9090

# kill process which uses port
whoport 9090 -k

FAQ

No process found but something is listening. (OSX)

You need to execute whoport with sudo if a process runs via another or root user. Also see man lsof section "Security".

Contributing

Pull Requests are very welcome!

If you find any issues, please report them via Github Issues and include your nodejs version and OS.

License

(MIT)