title: How to print lastest commit time of every sub folder in git repo?
body: <p>I know I can use <code>git log</code> with pretty log format <code>%ci</code> to get last commit time of any file.<br></p>
  <pre><code>git log -1 --pretty=&quot;format:%ci&quot; /path/to/repo/anyfile.any
  </code></pre>
  <blockquote>
  <p>-1 restricts it to the very last time the file changed<br></p>
  </blockquote>
  <p>My encounter problem is that I want to clear long-term non-maintenance sub folder on a huge git repo.<br>
  According to last commit time, I can comfirm what folder should be cleared.<br></p>
  <p>Furthermore, does anyway exist to print folder deepth only restricted to 1 level?</p>