title: what's the "dot" command in Linux bash
body: <p>I am wondering if there is a difference between:</p>
  <pre><code>. script.sh
  </code></pre>
  <p>and</p>
  <pre><code>source script.sh
  </code></pre>
  <p>Is it the same thing ?</p>
  <p>What's the name of the first syntax ? Is it &quot;dot&quot; command ?</p>
  <p>Thanks</p>