s</span>.process_status<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;waitpid&nbsp;:<br>
&nbsp;&nbsp;&nbsp;&nbsp;mode:<span class="constructor">UnixLabels</span>.wait_flag&nbsp;list&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int&nbsp;*&nbsp;<span class="constructor">UnixLabels</span>.process_status<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;system&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="con