title: what does the dev key represent in the object returned by fs.Stat with nodejs
body: <p>Below is the object I'm referring to - I'm trying to figure out what the <code>dev</code> key means (the very first key value pair). I was reading this from the following link: <a href="https://nodejs.org/api/fs.html" rel="nofollow noreferrer">https://nodejs.org/api/fs.html</a></p>
  
  <pre><code>Stats {
      dev: 2114,
      ino: 48064969,
      mode: 33188,
      nlink: 1,
      uid: 85,
      gid: 100,
      rdev: 0,
      size: 527,
      blksize: 4096,
      blocks: 8,
      atimeMs: 1318289051000.1,
      mtimeMs: 1318289051000.1,
      ctimeMs: 1318289051000.1,
      birthtimeMs: 1318289051000.1,
      atime: Mon, 10 Oct 2011 23:24:11 GMT,
      mtime: Mon, 10 Oct 2011 23:24:11 GMT,
      ctime: Mon, 10 Oct 2011 23:24:11 GMT,
      birthtime: Mon, 10 Oct 2011 23:24:11 GMT
  }
  </code></pre>