upgarade node code example

Example 1: update node ubuntu

sudo npm cache clean -f
sudo npm install -g n
sudo n stable

Example 2: how to update node js version

//check node version
>node -v
// let's install a program called n that will let us easily switch 
//between Node versions.
>npm install -g n
//Upgrading to the latest stable version
>n stable 
//Changing to a specific version
>n 10.16.0