/code> into
    <code class="code">dirname</code>. <code class="code">dirname</code> should already exists.<br>
</div>

<pre><span id="VALmkdir"><span class="keyword">val</span> mkdir</span> : <code class="type">string -> unit</code></pre><div class="info ">
Create a directory. Do not fail if the directory already
    exist.<br>
</div>
<br>
<h2 id="2_Filelockingfunction">File locking function</h2><br>

<pre><span id="VALflock"><span class="keyword">val</span> flock</span> : <code class="type">string -> unit