Install node&npm for zny-nomp on Ubuntu

gistfile1.txt

/* Install nodejs and npm
sudo apt install nodejs npm

/* Install node version control tool "n"
sudo npm install n -g

/* Install node v9
sudo n v9

/* Install npm
sudo npm install npm -g

/* Delete old nodejs and npm
sudo apt purge -y nodejs npm

/* Create symbolic link
sudo ln -sf /usr/local/bin/node /usr/bin/node
sudo ln -sf /usr/local/bin/npm /usr/bin/npm

/* Check your node&npm ver.
node -v
npm -v