Dodgy install/uninstall Puppet

Question

Getting started with Puppet and also not much chop on Ubuntu. Seems I've made a mess of installing/uninstalling Puppet on Tahr. My hunch so far is that I've deleted it incorrectly and now my re-install is not working how I think it should.... Can anyone give a few tips to find what I'm missing?

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Trying to run Puppet
phil@phil-HP-xw8600-Workstation:~$ puppet The program 'puppet' is currently not installed. You can install it by typing: sudo apt-get install puppet-common

I've gone through and installed it though -

phil@phil-HP-xw8600-Workstation:~$ sudo apt-get install puppet-common [sudo] password for phil: Reading package lists... Done Building dependency tree
Reading state information... Done puppet-common is already the newest version. 0 to upgrade, 0 to newly install, 0 to remove and 40 not to upgrade.

Whereis

I tried to uninstall Puppet manually by deleting what I could see of it files. Thing is originally it used to show up a bunch of places but now it is only there in a few spots:

Before
whereis puppet /etc/puppet /usr/bin/puppet /usr/local/bin/puppet /usr/share/puppet /usr/share/man/man8/puppet.8.gz /usr/bin/X11/puppet

After
phil@phil-HP-xw8600-Workstation:~$ whereis puppet puppet: /usr/share/man/man8/puppet.8.gz

Also done:

• apt-get --purge remove puppet [Purged] the install, re-did the install (see above)
• Installed via Software Center

Trying to purge the install after all this:
phil@phil-HP-xw8600-Workstation:~$ sudo apt-get --purge remove puppet [sudo] password for phil: Reading package lists... Done Building dependency tree
Reading state information... Done Package 'puppet' is not installed, so not removed 0 to upgrade, 0 to newly install, 0 to remove and 40 not to upgrade.

Solution

The exact cause might be something slightly different but perhaps I just missed the ruby gem for puppet (puppet seems to utilize ruby a fair bit (which I don't have much knowledge on). I executed the following command:
gem install puppet

And then can see the locations for puppet as:

whereis ruby ruby: /usr/bin/ruby /usr/lib/ruby /usr/bin/X11/ruby /usr/share/man/man1/ruby.1.gz

And after that showed up, calling puppet from the terminal appears differently:
phil@phil-HP-xw8600-Workstation:~$ puppet See 'puppet help' for help on available puppet subcommands