title: How do I fix broken dependencies if apt-get --fix-broken is giving me a "not known" error?
body: <p>I've been attempting to install OpenLDAP on Ubuntu, but I keep receiving a dependency error whenever I try to install it.</p>
  
  <p>The console output is:</p>
  
  <pre><code>dpkg: error processing package libapache2-mpm-itk (--configure):
   subprocess installed post-installation script returned error exit status 1
  dpkg: dependency problems prevent configuration of apache2-mpm-itk:
   apache2-mpm-itk depends on libapache2-mpm-itk; however:
    Package libapache2-mpm-itk is not configured yet.
  
  dpkg: error processing package apache2-mpm-itk (--configure):
   dependency problems - leaving unconfigured
  No apport report written because the error message indicates its a followup error from a previous failure.
  
  Errors were encountered while processing:
   libapache2-mpm-itk
   apache2-mpm-itk
  </code></pre>
  
  <p>I tried running the code below to fix these errors:</p>
  
  <pre><code>sudo apt-get -f
  </code></pre>
  
  <p>But I received the error:</p>
  
  <pre><code>E: Command line option 'f' [from -f] is not known.
  </code></pre>
  
  <p>I have also tried to use the alternative --fix-broken, but I get the same error. Has anyone ever experience this and know a way around this?</p>