如何在达到maxMessagesToLog时轮换WCF日志？

<system.diagnostics>
  <sources>
    <source name="System.ServiceModel.MessageLogging" switchValue="Warning, ActivityTracing">
      <listeners>
        <add name="xml" />
      </listeners>
    </source>
  </sources>
  <sharedListeners>
    <add name="xml" type="System.Diagnostics.XmlWriterTraceListener" initializeData="logs\ServiceTrace.svclog" />
  </sharedListeners>
  <trace autoflush="true" />
</system.diagnostics>
<system.serviceModel>
  <diagnostics>
    <messageLogging logMessagesAtTransportLevel="true" logMessagesAtServiceLevel="true" logMalformedMessages="true"
      logEntireMessage="true" maxSizeOfMessageToLog="65535000" maxMessagesToLog="500" />
  </diagnostics>
</system.serviceModel>

#!/bin/bash

logDir="/path/to/logs"
maxMessagesToLog=500

if [[ $(ls -1 ${logDir}/*.svclog | wc -l) -gt ${maxMessagesToLog} ]]; then
  oldestLog=$(ls -1t ${logDir}/*.svclog | tail -n 1)
  rm -f "${oldestLog}"
fi