title: How to install ruby-oci8, the ruby client for oracle on debian based systems (also ubuntu)
body: <p>Most information found even on the client's homepage is somehow inaccurate or outdated.
  This is the straight-foward method that worked for me, and I'd like to share with you.</p>
  
  <p>It would be nice if this answer can be expanded by some other system specific methods that might be harder to get it installed on.</p>