Steps to download and install node in ubuntu

• Download latest or recommended node xxx.tar.xz file from https://nodejs.org/en/

• Go to the directory in which (.tar.xz file) is downloaded.

• Update System Repositories: 
  • sudo apt update
  
  

• Install the package xz-utils
• sudo apt install xz-utils

• To Extract the .tar.xz file
• sudo tar -xvf name_of_file

• Copy to /usr folder
• sudo cp -r directory_name/{bin,include,lib,share} /usr/

• Check installed node version
• node --version