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How to install and configure a Node JS environment

In this manual we will show you how to easily install a Node JS environment that features both Node and the "NPM" package manager, one of the fundamental components of any Node JS environment.

Please note that this manual is written specifically for the Ubuntu 18.04 distribution and version. The steps may change for other versions or distributions although they should be very similar for those distributions based on Debian.

1. Update the package list

We use the "apt-get update" command to update the package list and ensure that we always download the latest version of the available packages.

apt-get update

2. Download and install nodejs and npm using the package manager.

Next, we need to install these two packages: nodejs and npm. Nodejs refers to the runtime environment that will allow us to execute code written in Javascript on the server. On the other hand, npm stands for "Node Packet Manager". We will use npm to install, manage and remove Node JS packages and libraries.

apt-get install nodejs npm

3. Verify the installation

To verify the installation, we will check both nodejs and npm versions. We will do this with the following commands:

nodejs --version npm --version

If these commands are executed without error and show us the version of the installation, then we have installed nodejs and npm correctly.

4. Run your first Javascript program on the server with Node JS.

Finally, we will create a small "Hello World" program to demonstrate how Node JS works. First, we will create a text file, for example, with the 'nano' editor.

nano programa.js

Then copy and paste the code we show you:

console.log ("Hello, world!");

Save the file with the key combination CTRL + O and finally, run the program as follows:

node programa.js

That's it!

If you have correctly followed the steps in this tutorial you will have successfully installed Node JS and NPM, as well as written a small "Hello World" program to verify its operation.

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We use our own cookies for the proper functioning of the site. In addition, third-party cookies are used for analytical purposes only. This information is not associated with any person so that personal identifying data is not stored, but is only information that is collected to identify the session, with the aim of facilitating the analysis of the website. You can change your preferences at any time by entering this website again. For more information about our cookie policy you can visit our Cookies. You can press the "Accept and close" button to give us your consent or you can access more detailed information and manage cookies.