Run Node.js scripts from the command line

Node.js / November 13, 2020 / TopCode / 0

Introduction

In this short article you will learn how to run a Node.js script file from the command line.

To run a .js file Node.js must be installed on the system. The basic way to run a Node.js script is to run the node globally available command and pass the name of the file you want to execute.

If your main Node.js application file is index.js, you can call it by:

node index.js

Here the node command must be executed in the same directory of the index.js file.

You can pass arguments to index.js file as well.

node index.js arg1 arg2 arg3

Here arg1, arg2 and arg3 are the arguments passed to index.js file

To read passed arguments to scrpt file use following code snippet.

var myArgs = process.argv.slice(2);
console.log('myArgs: ', myArgs);    // will return myArgs:  [ 'one', 'two', 'three', 'four', 'five' ]

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