rdless of the option <b>-not_before</b>, the days are always counted from today. When used together with the option <b>-not_after</b>, the explicit expiry date takes precedence.</p>

</dd>
<dt id="set_serial-n"><b>-set_serial</b> <i>n</i></dt>
<dd>

<p>Serial number to use when outputting a self-signed certificate. This may be specified as a decimal value or a hex value if preceded by <code>0x</code>. If not given, a large random number will be used.</p>

</dd>
<dt id="copy_extensions-arg"><b>-copy_extensio