<p>In modules/exec/doc/exec_admin.xml:</p>
<pre style='color:#555'>&gt; +                        &lt;para&gt;&lt;emphasis&gt;error&lt;/emphasis&gt; - pseudovariable where to store the error from
&gt; +                        the standard error of the process.
&gt; +                        &lt;/para&gt;
&gt; +                &lt;/listitem&gt;
&gt; +                &lt;listitem&gt;
&gt; +                        &lt;para&gt;&lt;emphasis&gt;envavp&lt;/emphasis&gt; - Avp where to store the values for the
&gt; +                        environment variables to be passed for the command. The names of the environment
&gt; +                        variables will be &quot;OSIPS_EXEC_#&quot; where # will start from 0. For example if you
&gt; +                        store 2 values into an avp (&quot;a&quot; and &quot;b&quot;) OSIPS_EXEC_0 will contain the first value
&gt; +                        and OSIPS_EXEC_1 the second value.
&gt; +                        &lt;/para&gt;
&gt; +                &lt;/listitem&gt;
&gt; +                &lt;/itemizedlist&gt;
&gt; +                &lt;para&gt;
&gt; +                WARNING: any OpenSIPS pseudo-vars which may contain special bash
&gt; +                characters should be placed inside quotes, e.g. exec(&quot;update-stats.sh &#39;$ct&#39;&quot;);
</pre>
<p>This also happend in previous versions. This happens because all the parameters received by exec are given in a single command and checking such things have to be done before giving the command to script. </p>

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