<p>I would like to set the log file name for a log4j and log4net appender to have the current date.  We are doing Daily rollovers but the current log file does not have a date.  The log file name format would be </p>

<pre><code>logname.2008-10-10.log
</code></pre>

<p>Anyone know the best way for me to do this?</p>

<p>edit:  I forgot to mention that we would want to do this in log4net as well.  Plus any solution would need to be usable in JBoss.</p>

DailyRollingFileAppender is what you exactly searching for.
```
```
<appender name="roll" class="org.apache.log4j.DailyRollingFileAppender">
    <param name="File" value="application.log" />
    <param name="DatePattern" value=".yyyy-MM-dd" />
    <layout class="org.apache.log4j.PatternLayout"> 
      <param name="ConversionPattern" 
          value="%d{yyyy-MMM-dd HH:mm:ss,SSS} [%t] %c %x%n  %-5p %m%n"/>
    </layout>
  </appender>
```
```