isntalling yarn code example
Example 1: ubuntu install yarn
sudo apt install --no-install-recommends yarn
Example 2: how to install yarn on ubuntu
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
sudo apt install --no-install-recommends yarn
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -