1sudo npm install npm@latest -g

1//First, clear the npm cache:
2	npm cache clean -f
3
4//Install n, Node’s version manager:
5	npm install -g n
6    
7//With the n module installed, you can use it to:
8	Install the latest stable version: n stable
9	Install the latest release: n latest

1sudo npm cache clean -f
2sudo npm install -g n
3sudo n stable

1//check node version
2>node -v
3// let's install a program called n that will let us easily switch 
4//between Node versions.
5>npm install -g n
6//Upgrading to the latest stable version
7>n stable 
8//Changing to a specific version
9>n 10.16.0
10

1# Using Ubuntu
2curl -sL https://deb.nodesource.com/setup_13.x | sudo -E bash -
3sudo apt-get install -y nodejs
4
5# Using Debian, as root
6curl -sL https://deb.nodesource.com/setup_13.x | bash -
7apt-get install -y nodejs
8

1npm cache clean -f
2npm install -g n
3n stable