linux install nodejs https://deb.nodesource.com/node_8.x code example
Example: https://deb.nodesource.com/setup_
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_current.x | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_current.x | bash -
apt-get install -y nodejs