console.log(process.argv)	prints the command-line arguments given to your script.	process.argv returns an array of strings. The first two items are the command executed and the file to the script.
window, document & alert	node is absent of browser-related functionality.
global	global varible in node like window in the browser
process.exit(0)	exits node
Node.js	is a server-side JavaScript runtime.
CommonJS	CommonJS is a project with the goal of specifying an ecosystem for JavaScript outside the browser.	CommonJS is a way of defining modules with the help of an exports object, that defines the module contents. And require to import some other module functionality.
Node.js is built on	Chrome's V8 JavaScript engine.
Pathnames that start with ____ are resolved relative to the current module’s path	"/", "./", or "../"
./" stands for	the current directory
"../" stands for	one directory up
"/" stands for	the root of the file system
if you ask for "./world/world" from the file /home/marijn/elife/run.js	Node will try to load the file /home/marijn/elife/world/world.js

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