title: What shell am I in?
body: <p>Is there a command to identify the name/type of current shell, the path to the shell binary, and the version of the shell?</p>
  
  <p>I don't need all of that, but the more I can get, the better.</p>
  
  <p>I want something that has the same feel of <code>uname</code>, <code>pwd</code>, <code>whoami</code>. Just a plain utility with a simple output. (which so far hasn't showed up :/ )</p>
  
  <h3>re <code>ps</code></h3>
  
  <pre><code>$ ps -o comm $$
  COMM
  -bash
  </code></pre>
  
  <p>Why <code>-bash</code> instead of the full path as it would be with everything else? What's the deal with the dash there?</p>