lass="type-var">'stdout</span>, <span class="type-var">'stderr</span>)</span> <a href="../Core/Cmd/index.html#type-t">Core.Cmd.t</a></span> <span class="arrow">&#45;&gt;</span></span> <span><span>(unit, string)</span> <span class="xref-unresolved">Stdlib</span>.result</span></span></code></div><div class="spec-doc"><p>Execute the command and wait for it to exit, returning <code>()</code> wrapped in the output type.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write"><a href