gt;</span></span>
  <span>string <span class="arrow">&#45;&gt;</span></span>
  string * <span class="xref-unresolved">Filename_unix__</span>.Import.Unix.file_descr</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-temp_file"><a href="#val-temp_file" class="anchor"></a><code><span><span class="keyword">val</span> temp_file : <span><span class="optlabel">?perm</span>:int <span class="arrow">&#45;&gt;</span></span> <span><span class="optlabel">?in_dir</span>:string <span 