PowerShell通过EventLog查看近期电脑开机和关机时间


机器开机和关机时写在EventLog中的第一条日志和最后一条日志分别为:60056006

TimeCreated                     Id LevelDisplayName Message
-----------                     -- ---------------- -------
8/18/2014 9:23:04 AM          6005 Information      The Event log service was started.   
8/15/2014 7:03:48 PM          6006 Information      The Event log service was stopped.

所以根据上面的信息很容易得出机器的开机,关机,在线时间,代码为:

Function Get-ComputerUptimeHistory {
 $q='
<QueryList>
  <Query Id="0" Path="System">
    <Select Path="System">*[System[(EventID=6005 or EventID=6006)]]</Select>
  </Query>
</QueryList>'
$events = Get-WinEvent -FilterXml $q
$i=-1
while ( $i+1 -lt $events.length ) {
 if($i -eq -1)
 {
  [PSCustomObject]@{
  StartTime = $events[0].TimeCreated;
  StopTime = $null ;
  UpTime = [datetime]::Now - $events[0].TimeCreated
  }
 }
 else{
 [PSCustomObject]@{
  StartTime = $events[$i+1].TimeCreated;
  StopTime = $events[$i].TimeCreated ;
  UpTime = $events[$i].TimeCreated - $events[$i+1].TimeCreated
  }
 }
 $i += 2
}

}

输出为:

PS> Get-ComputerUptimeHistory | ft -AutoSize

StartTime             StopTime              UpTime
---------             --------              ------
8/18/2014 9:23:04 AM                        2.05:00:22.5891685
8/13/2014 9:30:42 AM  8/15/2014 7:03:48 PM  2.09:33:06
7/22/2014 12:16:09 PM 8/13/2014 9:29:09 AM  21.21:13:00
7/22/2014 9:23:08 AM  7/22/2014 11:26:08 AM 02:03:00
7/17/2014 11:08:57 AM 7/21/2014 6:20:28 PM  4.07:11:31
7/14/2014 9:35:11 AM  7/17/2014 11:07:25 AM 3.01:32:14
7/10/2014 3:01:53 PM  7/14/2014 9:21:48 AM  3.18:19:55
7/8/2014 5:04:02 PM   7/10/2014 2:58:36 PM  1.21:54:34
6/30/2014 9:17:28 AM  7/8/2014 5:01:24 PM   8.07:43:56
6/29/2014 10:24:50 AM 6/29/2014 6:04:09 PM  07:39:19
6/20/2014 9:33:08 AM  6/27/2014 6:18:34 PM  7.08:45:26
6/16/2014 3:05:45 PM  6/20/2014 9:31:16 AM  3.18:25:31
6/12/2014 9:40:05 AM  6/16/2014 3:04:02 PM  4.05:23:57
6/6/2014 2:52:11 PM   6/12/2014 9:37:46 AM  5.18:45:35
6/5/2014 10:55:20 AM  6/6/2014 2:51:09 PM   1.03:55:49
6/5/2014 9:19:38 AM   6/5/2014 10:54:04 AM  01:34:26
6/3/2014 1:33:24 PM   6/4/2014 7:58:58 PM   1.06:25:34
5/30/2014 10:07:06 AM 6/3/2014 1:31:24 PM   4.03:24:18
5/29/2014 5:30:33 PM  5/30/2014 9:41:41 AM  16:11:08
5/29/2014 5:28:57 PM  5/29/2014 5:29:43 PM  00:00:46
5/29/2014 2:52:58 PM  5/29/2014 5:26:57 PM  02:33:59
5/29/2014 2:50:31 PM  5/29/2014 2:51:06 PM  00:00:35
5/27/2014 11:54:43 AM 5/29/2014 2:47:29 PM  2.02:52:46
5/23/2014 5:31:18 PM  5/26/2014 9:16:33 AM  2.15:45:15
5/22/2014 6:00:29 PM  5/23/2014 9:16:45 AM  15:16:16
5/21/2014 4:38:22 PM  5/21/2014 4:40:07 PM  00:01:45
5/21/2014 9:43:59 AM  5/21/2014 4:36:34 PM  06:52:35
5/19/2014 11:27:28 AM 5/21/2014 9:42:32 AM  1.22:15:04
5/19/2014 9:25:56 AM  5/19/2014 9:27:00 AM  00:01:04
5/15/2014 9:23:15 AM  5/15/2014 9:24:16 AM  00:01:01
5/15/2014 11:18:45 AM 5/15/2014 11:19:49 AM 00:01:04
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