title: My path variable looks strange
body: <p>In console when I type:</p>
  
  <pre><code>echo $PATH
  </code></pre>
  
  <p>I see</p>
  
  <pre><code>/Users/jeffrey.wan/.rbenv/shims:/Users/jeffrey.wan/.rbenv/shims:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
  </code></pre>
  
  <p>So the absolute paths that are looked up whenever a user types in a command at the command line that is not built into the shell are:</p>
  
  <p>/Users/jeffrey.wan/.rbenv/shims<br>
  /Users/jeffrey.wan/.rbenv/shims<br>
  /usr/local/bin<br>
  /usr/bin<br>
  /bin<br>
  /usr/sbin<br>
  /sbin  </p>
  
  <p>How did this happen that there is some doubling? Is this a problem?</p>
  
  <p>What should I do to eliminate that? I recently moved some stuff in my bash_profile that I didn't understand.</p>
  
  <p>Also, what are rbenv shims?</p>