kill all node processes

JavaScript
killall -s KILL node
taskkill /f /im node.exeThe Difference Between kill and pkill
The kill command is a wrapper to the kill system call, which knows only about process IDs. pkill can determine the process ID based on things like, process name, owner of the process or session id.

Syntax:
$ kill 1234
$ pkill -f node
killall node
killall -9 node

Source

Also in JavaScript: