> in the shell.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-file_out"><a href="#val-file_out" class="anchor"></a><code><span><span class="keyword">val</span> file_out : 
  <span>string <span class="arrow">&#45;&gt;</span></span>
  <span><span><span>(<span class="type-var">'stdin</span>, <a href="#type-stdout">stdout</a>, <span class="type-var">'stderr</span>)</span> <a href="../Core/Cmd/index.html#type-t">Cmd.t</a></span> <span class="arrow">&#45;&gt;</span></span>
  <span