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