title: Linux alternative to pdftk to fill in forms
body: <p><a href="https://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/" rel="nofollow noreferrer">pdftk</a> has had a <code>libgcj</code> outdated dependency for years. Unfortunately, that means pdftk can't be installed in any recent RedHat/CentOS/Fedora installation.</p>
  
  <p>I have been searching for alternatives and I can see some people are using tools like <code>pdfunite</code> to do some things that pdftk used to do.</p>
  
  <p>Unfortunately, I've not been able to find any tool that extracts form fields data and/or fills a form from the command line. Is there such an alternative?</p>
  
  <p>I can see this was <a href="https://stackoverflow.com/questions/1155422/pdftk-alternative">asked before</a> seven years ago in 2009, but the accepted answer is no longer relevant. The issue in 2016 is the outdated (and unsafe!) dependency. Hence, why I'm creating a new question.</p>