="arrow">&#45;&gt;</span></span>
  <span><span>(<a href="#type-stdin">stdin</a>, <a href="#type-stdout">stdout</a>, <a href="#type-stderr">stderr</a>)</span> <a href="../Core/Cmd/index.html#type-t">Cmd.t</a></span></span></code></div><div class="spec-doc"><p>Helper funtions for constructing Cmd.t. The optional <code>prog</code> argument is mainly for if you don't want your path to be searched for the executable.</p><p><code>env</code> is a list of strings with the format <code>&quot;NAME=value&quot;</code>.