Installing NODE, NPM , angular

Use Current Release: At te last update of this tutorial, Node.js 10.0.0 is the current Node.js release available.

sudo apt-get install curl python-software-properties
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -

Use LTS Release : At the last update of this tutorial, Node.js 8.11.1 is the LTS release available.

sudo apt-get install curl python-software-properties
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -