title: How to see git diff from very beginning to the HEAD?
body: <p>I am using <code>git</code> to track changes in configuration files of third-party application. At the first moment I did initial commit and then was fitting settings of the application gradually. Now I have final good settings and committed them into <code>git</code>. I wish to see what I had changed.</p>
  
  <p>How to accomplish this?</p>
  
  <p>I did </p>
  
  <pre><code>git log --graph
  </code></pre>
  
  <p>or similar, but see all commits marked with long hexadecimal numbers. May I use them for <code>git diff</code>?</p>