title: apt-get: command not found in mac osx even after installing homebrew
body: <p>I am trying to run a r markdown file but got an error message </p>
  
  <blockquote>
    <p>"! LaTeX Error: File `titling.sty' not found."</p>
  </blockquote>
  
  <p>From googling around, the internet is telling me to do this in the terminal:</p>
  
  <pre><code>sudo apt-get install texlive-latex-extra
  </code></pre>
  
  <p>Tried that and got:</p>
  
  <pre><code>apt-get: command not found
  </code></pre>
  
  <p>More googling around told me to install hombrew, which I already have. Nevertheless I uninstalled and re-installed homebrew but same error was shown afterwards.</p>
  
  <p>I found anoter post that told me to do this:</p>
  
  <pre><code>brew install wget
  </code></pre>
  
  <p>That installed correctly.</p>
  
  <p>But then when I run <code>sudo apt-get install texlive-latex-extra</code> again I get the same apt-get not found message.</p>
  
  <p>I'm on Osx 10.9</p>