title: how to kill the tty in unix
body: <p>This is the result of the <code>finger</code> command (Today(Monday) when I (Vidya) logged in)</p>
  
  <pre><code>sekic1083 [6:14am] [/home/vidya] -&gt; finger
  Name        Tty       Idle   Login Time    Where
  Felix   pts/0        -       Thu 10:06  sekic2594.rnd.ki.sw.
  john        pts/1       2d       Fri 15:43
  john        *pts/2      2d       Fri 15:43
  john      *pts/3       4     Fri 15:44
  john      *pts/7       -         Thu 16:25
  Vidya      pts/0       -         Mon 06:14
  Vidya     *pts/5       -         Mon 06:14
  Vidya     *pts/6       -         Tue 10:13
  Vidya     *pts/9       -         Wed 05:39
  Vidya     *pts/10      -         Wed 10:23
  </code></pre>
  
  <p>Under column the <code>Tty pts/0 and pts/5</code> are the current active terminals. </p>
  
  <p>Apart from those two <code>pts/6</code>, <code>pts/9</code> and <code>pts/10</code> are also present and I had logged into these last week. But the idle time for them is showing as "-" (not idle). </p>
  
  <p>How can I kill these 6,9 and 10 terminals?</p>