从Powershell中的每个对象组的数组中获取最新日期

Question

I have an array $data :

PS> $data
Datum                  User                   Computer                                      
-----                  ---------              --------                                      
10/06/2013 13:10:56    geb1@TESTDOMAIN.COM    DC1$                                          
10/06/2013 13:09:25    geb2@TESTDOMAIN.COM    DC2$                                          
10/06/2013 10:05:13    geb2@TESTDOMAIN.COM    DC2$                                          
7/06/2013 16:32:47     geb1@TESTDOMAIN.COM    DC1$    

I want to get the latest dates from the $data array for each computer like this:

PS> $result
Datum                  User                   Computer                                      
-----                  ---------              --------                                      
10/06/2013 13:10:56    geb1@TESTDOMAIN.COM    DC1$                                          
10/06/2013 13:09:25    geb2@TESTDOMAIN.COM    DC2$                                          

I really couldn't get this result. Could you please help me on this?

Answer 1

$data | Foreach-Object {$_.Datum = [DateTime]$_.Datum; $_} | 
Group-Object Computer | 
Foreach-Object {$_.Group | Sort-Object Datum | Select-Object -Last 1}

Answer 2

Maybe you use the $GET_[]; statement?

Answer 3

这应该有效，但我现在无法测试它：

$result =$data | sort computer,{ [datetime]$_.datum } -desc | group computer | % { $_.group[0] }