MacOS Lion下面查看休眠状态的命令

使用这个命令：

% pmset -g assertions

下面是我的机器的输出：

10/20/11 8:32:34 PM GMT 
Assertion status system-wide:
   ChargeInhibit                           0
   PreventUserIdleDisplaySleep             0
   PreventUserIdleSystemSleep              0
   NoRealPowerSources_debug                0
   CPUBoundAssertion                       0
   EnableIdleSleep                         1
   PreventSystemSleep                      0
   DisableInflow                           0
   DisableLowPowerBatteryWarnings          0
   ExternalMedia                           0

Kernel Assertions: 0x0004 
 * Kernel Assertion ID = 500
   Created At = 1/1/70 8:32:41 AM GMT+0 
   Modified At = 10/20/11 1:10:58 PM GMT 
   Owner ID = 0xffffff8013645000
   Level = 255
   Assertions Set = None (4)

 * Kernel Assertion ID = 501
   Created At = 1/1/70 8:32:50 AM GMT+0 
   Modified At = 10/20/11 1:10:05 PM GMT 
   Owner ID = 0xffffff8013655000
   Level = 255
   Assertions Set = None (4)

 * Kernel Assertion ID = 502
   Created At = 1/1/70 8:33:59 AM GMT+0 
   Modified At = 10/20/11 1:13:31 PM GMT 
   Owner ID = 0xffffff8013674000
   Level = 0
   Assertions Set = None (32)