title: Characters in PS1 variable
body: <p>My PS1 variable :</p>
  
  <pre><code>\[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\u@\h:\w\$
  </code></pre>
  
  <p>I understand everything except the first part <code>\[\e]0;\u@\h: \w\a\]</code>. What is the purpose of this part? It doesn't seem to affect my prompt. In fact my question could be reduce even more to this part : <code>\e]0;</code></p>