ubuntu upgrade npm and node code example
Example 1: update node ubuntu
sudo npm cache clean -f
sudo npm install -g n
sudo n stable
Example 2: ubuntu update nodejs
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_12.x | bash -
apt-get install -y nodejs