Software & AppsOperating SystemLinux

How To Update Node.js to LTS Version on Ubuntu 20.04

Ubuntu 9

In this comprehensive guide, we will explore how to update Node.js to its Long Term Support (LTS) version on Ubuntu 20.04. Node.js is a popular JavaScript runtime built on Chrome’s V8 JavaScript engine. LTS versions of Node.js are long-term support versions that receive updates for an extended period of time.

Quick Answer

To update Node.js to the LTS version on Ubuntu 20.04, you can either use the NodeSource repository or the n version manager. Using the NodeSource repository involves updating package lists, installing curl, adding the repository, and then installing Node.js and npm. On the other hand, using the n version manager requires installing the manager, using it to install the LTS version, and verifying the installation.

Method 1: Using NodeSource Repository

Step 1: Update Package Lists

The first step is to update your package lists for upgrades and new package installations. Open your terminal and run the following command:

sudo apt update

The sudo command allows you to run programs with the security privileges of another user (by default, as the superuser). apt is the package handling utility in Ubuntu, and update is used to resynchronize the package index files from their sources.

Step 2: Install Curl

Next, we need to install curl, a tool to transfer data from or to a server, using one of the supported protocols. If it’s not already installed, you can do so by running:

sudo apt install curl

The install command is used to install a new package.

Step 3: Add NodeSource Repository

Now, we will add the NodeSource repository for the LTS version. This repository contains the LTS version of Node.js. Run the following command:

curl -sL https://deb.nodesource.com/setup_lts.x | sudo -E bash -

The -s option means silent mode. -L allows curl to handle redirects. The URL https://deb.nodesource.com/setup_lts.x is the address of the NodeSource repository. | sudo -E bash - pipes the output to bash to execute it with sudo privileges.

Step 4: Install Node.js and npm

After adding the NodeSource repository, we can install Node.js and npm (Node Package Manager) by running:

sudo apt install -y nodejs

The -y option will automatically answer yes to the prompts; a way to run commands without user interaction.

Step 5: Verify Installation

Finally, verify that Node.js is installed correctly by checking its version:

node -v

The -v command shows the version of the installed Node.js.

Method 2: Using n Version Manager

Step 1: Install n Version Manager

First, open a terminal and install the n version manager by running:

sudo npm install -g n

The -g option means that the package will be installed globally, making it available to all projects on your system.

Step 2: Install LTS Version Using n

Next, use n to install the LTS version of Node.js by running:

sudo n lts

The lts command installs the latest LTS version of Node.js and sets it as the default version.

Step 3: Verify Installation

Finally, verify that Node.js is installed correctly by checking its version:

node -v

In conclusion, updating Node.js to the LTS version on Ubuntu 20.04 is a straightforward process. Whether you choose to use the NodeSource repository or the n version manager, you’ll have the LTS version of Node.js up and running in no time.

How can I check the current version of Node.js installed on my Ubuntu system?

You can check the version of Node.js installed on your system by running the following command in the terminal: node -v. This will display the version number.

Can I update Node.js to the LTS version without using the NodeSource repository or n version manager?

While using the NodeSource repository or n version manager is the recommended method for updating to the LTS version, you can manually download the LTS version from the official Node.js website and install it on your Ubuntu system. However, using the repository or version manager ensures easier updates and management in the future.

Will updating to the LTS version of Node.js affect my existing projects?

Updating to the LTS version should not have any significant impact on your existing projects. However, it is always a good practice to test your projects after the update to ensure compatibility and address any potential issues.

How often are LTS versions of Node.js released?

LTS versions of Node.js are typically released every two years. These versions receive support and updates for an extended period, usually for 30 months, ensuring stability and compatibility.

Can I have multiple versions of Node.js installed on my Ubuntu system?

Yes, it is possible to have multiple versions of Node.js installed on your system. Tools like n version manager allow you to manage multiple versions and switch between them as needed. This can be useful for testing and maintaining compatibility with different projects.

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