title: Use of tee command promptly even for one command
body: <p>I am new to using <code>tee</code> command.</p>
  
  <p>I am trying to run one of my program which takes long time to finish but it prints out information as it progresses. I am using 'tee' to save the output to a file as well as to see the output in the shell (<code>bash</code>).</p>
  
  <p>But the problem is <code>tee</code> doesn't forward the output to shell until the end of my command.
  Is there any way to do that ?</p>
  
  <p>I am using Debian and <code>bash</code>.</p>