Download the latest version of Quine

get_latest_quine.sh

#! /bin/bash

# Download the latest release
curl -s https://api.github.com/repos/thatdot/quine/releases/latest \
| grep "browser_download_url.*jar" \
| cut -d : -f 2,3 \
| tr -d \" \
| wget -i -

# Create the latest sym-link
ln -s $(ls -tr quine-*.jar | tail -1) latest

I keep versions of Quine in a releases directory inside of my working directory.
This script downloads the latest release from Github and then creates a sym-link to latest.
That way I can always run the latest version of Quine using java -jar ../releases/latest.