<img src="media/blogs/node-js.png" alt="" width="442" height="270">
Using Node Js we can run javascript from outside browser. With the help of node js we can create backend application using javascript.
In this article i am going to show you how to download and install node js in ubuntu machine step by step.
There are different ways to install node js on ubuntu machine. The simplest way to install using command&nbsp;
<pre class="language-markup"><code>apt install nodejs
</code></pre>
but the disadvange of this command is it install old version of node js. so to install latest version we are going to use nvm step by step.
<h2 id="prerequisites">Prerequisites</h2>
This guide assumes that you are using Ubuntu 20.04. Before you begin, you should have a non-root&nbsp;user account with&nbsp;<code>sudo</code> privileges set up on your system.
<h2 id="option-3-installing-node-using-the-node-version-manager">Installing Node Using the Node Version Manager</h2>
To install NVM on your Ubuntu 20.04 machine, visit&nbsp;the project&rsquo;s GitHub page. Copy the&nbsp;<code>curl</code>&nbsp;command from the README file that displays on the main page. This will get you the most recent version of the installation script.
Before piping the command through to&nbsp;<code>bash</code>, it is always a good idea to audit the script to make sure it isn&rsquo;t doing anything you don&rsquo;t agree with. You can do that by removing the&nbsp;<code>| bash</code>&nbsp;segment at the end of the&nbsp;<code>curl</code>&nbsp;command:
<pre class="language-markup"><code>curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh</code></pre>
Take a look and make sure you are comfortable with the changes it is making. When you are satisfied, run the command again with&nbsp;<code>| bash</code>&nbsp;appended at the end. The URL you use will change depending on the latest version of nvm, but as of right now, the script can be downloaded and executed by typing:
<pre class="language-markup"><code>curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash</code></pre>
This will install the&nbsp;<code>nvm</code>&nbsp;script to your user account. To use it, you must first source your&nbsp;<code>.bashrc</code>&nbsp;file:
<pre class="language-markup"><code>source ~/.bashrc</code></pre>
Now, you can ask NVM which versions of Node are available:
<pre class="language-markup"><code>nvm list-remote</code></pre>
<pre class="language-markup"><code>Output
. . .
 v14.16.0 (LTS: Fermium)
 v14.16.1 (LTS: Fermium)
 v14.17.0 (LTS: Fermium)
 v14.17.1 (LTS: Fermium)
 v14.17.2 (LTS: Fermium)
 v14.17.3 (LTS: Fermium)
 v14.17.4 (Latest LTS: Fermium)
 v15.0.0
 v15.0.1
 v15.1.0
 v15.2.0
 v15.2.1
 v15.3.0
 v15.4.0
 v15.5.0
 v15.5.1
 v15.6.0
 v15.7.0
 v15.8.0
 v15.9.0
 v15.10.0
 v15.11.0
 v15.12.0
 v15.13.0
 v15.14.0
 v16.0.0
 v16.1.0
 v16.2.0</code></pre>
Install by typing the version
<pre class="language-markup"><code>nvm install v16.0.2</code></pre>
We can also use different version as well
<pre class="language-markup"><code>nvm list</code></pre>
<pre class="language-markup"><code>nvm install v16.0.0</code></pre>
switch the version
<pre class="language-markup"><code>nvm use v16.0.0
</code></pre>
I hope this guide helps you.
&nbsp;
&nbsp;

Node.js is a JavaScript runtime for server-side programming. It allows developers to create scalable backend functionality using JavaScript, a language many are already familiar with from browser-based web development.

LCWD

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