title: What is special about /dev/tty?
body: <p><code>ls -la /dev/tty</code> shows the output:</p>
  
  <pre><code>crw-rw-rw- 1 root tty 5, 0 Dec 14 22:21 /dev/tty
  </code></pre>
  
  <p>What does c at the beginning mean? When I do something like <code>pwd &gt; /dev/tty</code> it prints to the stdout. What does the file /dev/tty contain?</p>