How to install latest Node.js on Ubuntu or Debian

Ubuntu provides Node.js packages in it's default apt repository, but it's normally not the most up-to-date. If you require the latest version of Node.js on Ubuntu, you'll have to install them from NodeSource's PPA.

1. Open terminal application.
2. Install curl if not already installed.

   $ sudo apt update && sudo apt install --assume-yes curl

3. Add PPA for specific Node.js version via NodeSource's official PPA setup script.

   $ curl --silent --location https://deb.nodesource.com/setup_10.x  | sudo bash -

   Replace 10.x with 12.x, 11.x or 9.x, depending on your actual required version

4. Install latest Node.js from the PPA.

   $ sudo apt install --assume-yes nodejs 

   npm is automatically installed as dependency and does not require separate installation.

5. Check installed nodejs and npm version.

   $ nodejs -v
   v10.9.0
   $ npm -v
   6.2.0