m, its length, and a greeting
to the whomever's named first on the command line:
</p>
<pre class="mendoza-codeblock"><code data-language="janet"><span class="mdzsyn-comment">#!/usr/bin/env janet</span>

(<span class="mdzsyn-coresym">defn</span> <span class="mdzsyn-symbol">print-greeting</span>
  [<span class="mdzsyn-symbol">greetee</span>]
  (<span class="mdzsyn-coresym">print</span> <span class="mdzsyn-string">"Hello, "</span> <span class="mdzsyn-symbol">greetee</span> <span class="mdzsyn-string">"!"</span