easiest way install nodejs
npm install and n install ( ubuntu linux) 1. sudo apt install npm 2. sudo npm install - g n 3. sudo n stable yarn install curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add - echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list sudo apt - get update sudo apt - get install yarn pm2 install sudo npm install pm2 -g