title: what is the difference between tty and vty in linux
body: <p>Can anyone explain me the difference between vty and tty ?</p>
  
  <p>I am getting the following when i execute tty .</p>
  
  <pre><code>[sce@..]# tty
  /dev/pts/135
  </code></pre>
  
  <p>what is /dev/pts/135 here ?</p>