$ curl -O  http://apt.puppetlabs.com/puppetlabs-release-pc1-trusty.deb
$ dpkg -i puppetlabs-release-pc1-trusty.deb
$ apt-get update
$ apt-get install puppet-agent

$ wget -O - https://raw.githubusercontent.com/petems/puppet-install-shell/master/install_puppet_agent.sh | sudo sh

$ curl -O http://apt.puppetlabs.com/puppet5-release-trusty.deb
$ dpkg -i puppet5-release-trusty.deb
$ apt-get update
$ apt-get install puppet-agent

$ wget -O - https://raw.githubusercontent.com/petems/puppet-install-shell/master/install_puppet_5_agent.sh | sudo sh