Windows Powershell分析和比较管道结果

PS C:Powershell> ls | measure length
Count  : 19
Average :
Sum   :
Maximum :
Minimum :
Property : length

PS C:Powershell> ls | measure length -Average -Sum -Maximum -Minimum
Count  : 19
Average : 53768.8421052632
Sum   : 1021608
Maximum : 735892
Minimum : 0
Property : length

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PS C:Powershell> Get-Content .word.txt | measure -Line -Word -Character
Lines Words Characters Property
----- ----- ---------- --------
  3  23    141

PS C:Powershell> $before=Get-Process
PS C:Powershell> $after=get-process
PS C:Powershell> Compare-Object $before $after

InputObject               SideIndicator
-----------               -------------
System.Diagnostics.Process (notepad)  =>
System.Diagnostics.Process (notepad)  =>
System.Diagnostics.Process (AcroRd32)

PS C:PowerShell> Get-Service wsearch

Status  Name        DisplayName
------  ----        -----------
Running wsearch      Windows Search

PS C:PowerShell> $svc1=Get-Service wsearch
PS C:PowerShell> $svc1.stop()
PS C:PowerShell> $svc2=Get-Service wsearch
PS C:PowerShell> Compare-Object $svc1 $svc2 -Property Status,Name

          Status Name            SideIndicator
          ------ ----            -------------
       StartPending wsearch          =>
          Running wsearch

PS C:PowerShell> "Hellow
 Power
 Shell" >a.txt

PS C:PowerShell> "Hollow
 Shell
 Linux" >b.txt

PS C:PowerShell> Compare-Object (Get-Content .a.txt) (Get-Content .b.txt)
InputObject SideIndicator
----------- -------------
Hollow   =>
Linux     =>
Hellow

PS C:PowerShell> Get-Process | Export-Clixml before.xml
PS C:PowerShell> $before=Import-Clixml .before.xml
PS C:PowerShell> $after=Get-Process
PS C:PowerShell> Compare-Object -ReferenceObject $before -DifferenceObject $after