title: Run multiple commands in gdb
body: <p>Is it possible to run multiple commands in <code>gdb</code> such as the following:</p>
  <pre><code># step instruction and then print what I want to see again
  &gt;&gt;&gt; si &amp;&amp; x/bt $rsi
  </code></pre>
  <p>If so, how can it be done?</p>