Install Yarn Ubuntu 16.04 (Linux Mint 18.1)

See on Installation | Yarn | Linux tab

There are instructions for several linux distributions

I was unable to install Yarn on Ubuntu 16.04 using the accepted answer but found it easy with npm:

npm install -g yarn

Then check install / version with

yarn --version

On Ubuntu Linux, you can install Yarn via Debian package repository. You will first need to configure the repository:

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

Then you can simply:

sudo apt-get update && sudo apt-get install yarn

More information here