Windows7和win2008命令行清除日志方法

看SECURITY日志的详细信息：
C:\Windows\system32>wevtutil gl security
name: security
enabled: true
type: Admin
owningPublisher:
isolation: Custom
channelAccess: O:BAG:SYD:(A;;0xf0005;;;SY)(A;;0×5;;;BA)(A;;0×1;;;S-1-5-32-573)
logging:
  logFileName: %SystemRoot%\System32\Winevt\Logs\security.evtx
  retention: false
  autoBackup: false
  maxSize: 20971520
publishing:
  fileMax: 1
清空SECURITY/SYSTEM/APPLICATION日志:
C:\Windows\system32>wevtutil cl security
C:\Windows\system32>wevtutil cl system
C:\Windows\system32>wevtutil cl application