> + <para>
> + WARNING: "input"/"output"/"error" parameters are not designed
> for a large amount of
> + data so one should be careful when using them because server
> could considerably be
> + slowed down.
> + </para>
> + <para>
> + This function can be used from REQUEST_ROUTE, FAILURE_ROUTE,
> + LOCAL_ROUTE, STARTUP_ROUTE, TIMER_ROUTE, EVENT_ROUTE,
> ONREPLY_ROUTE.
> + </para>
> + <example>
> + <title><function moreinfo="none">exec</function> usage</title>
> + <programlisting format="linespecific">
> +...
> +$avp(env) = "a";
> +$avp(env) = "b";
> +exec("ls -l", "$var(out)",, "$avp(env)");
This example does not take stderr into account.
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