title: Ghostscript not writable
body: <p>Trying to install octave on a new Macbook, but keep running into problems using Homebrew. I am following directions here:
  <a href="http://wiki.octave.org/Octave_for_MacOS_X" rel="noreferrer">http://wiki.octave.org/Octave_for_MacOS_X</a></p>
  
  <p>I run into the error:</p>
  
  <pre><code>Linking /usr/local/Cellar/ghostscript/9.14...
  Error: Could not symlink share/ghostscript/Resource
  /usr/local/share/ghostscript is not writable.
  </code></pre>
  
  <p>After entering:</p>
  
  <pre><code>sudo chown -R username:admin /usr/local/bin
  brew link ghostscript
  </code></pre>
  
  <p>I still get the same error. How do I make ghostscript writable?</p>