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Note: Also see How to install NodeJS 12.x on Ubuntu in 1 minute
Run these shell commands on your Ubuntu computer to install NodeJS 10.x:
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash - sudo apt-get install -y nodejs
Instead of setup_10.x you can also choose other versions like setup_8.x. However, using this method, you can’t install multiple versions of NodeJS in parallel.