title: Command to display active conda channels
body: <p>Is there a command to display active <code>conda</code> channels?</p>
  
  <p>I know I can search for the <code>.condarc</code> file to check for any added channels. However, there are two problems with this approach:</p>
  
  <ol>
  <li>The default channels might change on newer version of <code>conda</code>. For example, since <em>conda 4.7</em>, the <code>free</code> channel has been removed from the default channels. Another example is the addition of channel <code>main</code> in <em>conda 4.3.27</em>.</li>
  <li>No unified way to display channels (that is open file contents) in different OS.</li>
  </ol>
  
  <p>Therefore, a command is necessary for viewing active <code>conda</code> channels. Does such a command exist? I have conducted a web search, but have I have not found something.</p>