title: How to install poppler in ubuntu 15.04?
body: <p>Poppler is a PDF rendering library based on the xpdf-3.0 code base.
  I have already downloaded the tar.xz file from the official site <a href="http://poppler.freedesktop.org/" rel="noreferrer">http://poppler.freedesktop.org/</a>
  But I do not know what to do with this file</p>
  
  <p>Is there any command to install or run?</p>
  
  <p>P.S. - I am new to linux, so I don't know a lot about it yet..</p>