Install Heroku CLI on Linux

install_heroku.sh

#!/usr/bin/env bash

#############################################################################
# Utility script to install (and update) embedded heroku from their tarball.
#############################################################################

set -eox pipefail

if [ -L /usr/local/bin/heroku ]; then
    echo "Heroku symbolic link found, removing"
    sudo rm /usr/local/bin/heroku
fi

if [ -d /opt/heroku ]; then
    echo "Heroku directory already exists, trashing it."
    sudo rm -rf /opt/heroku
fi


curl https://cli-assets.heroku.com/heroku-linux-x64.tar.gz | sudo tar zx -C /opt/
sudo ln -s /opt/heroku/bin/heroku /usr/local/bin/