this module raises <code class="code"><span class="constructor">Sys_error</span></code> with an
  informative message when the underlying system call signal
  an error.</p>
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<pre><span id="VALargv"><span class="keyword">val</span> argv</span> : <code class="type">string array</code></pre><div class="info ">
<div class="info-desc">
<p>The command line arguments given to the process.
   The first element is the command name used to invoke the program.
   The following elements 