如何在PowerShell中使用Group-Object cmdlet？

2024-05-10 14:09:04 417

顾名思义，Group-Object可用于对相似的属性进行分组。

示例

Get-Service | Group-Object Status

输出结果

Count Name          Group
----- ----          -----
160 Stopped         {AarSvc_8f3023, AdobeFlashPlayerUpdateSvc, AJR outer, ALG...}
130 Running         {AdobeARMservice, Appinfo, AudioEndpointBuilder, Audiosrv...}

上面的输出按状态分组（“已停止”和“正在运行”）。共有160个服务处于“已停止”状态，而130个处于“运行”状态。

同样，您可以使用starttype属性过滤组。

Get-Service | Group-Object StartType

输出结果

PS C:\WINDOWS\system32> Get-Service | Group-
Object StartType
Count Name                          Group
----- ----                          -----
197 Manual                          {AarSvc_8f3023, AdobeFlashPlayerUpdateSvc, A JRouter, ALG...}
84 Automatic                        {AdobeARMservice, AudioEndpointBuilder, Audi , AVP20.0...}
9 Disabled                          {AppVClient, NetTcpPortSharing, RemoteAccess , RemoteRegistry...}

如果仅需要使用Count和Name属性，则-NoElement参数。

Get-Service | Group-Object StartType -NoElement

输出结果

Count      Name
-----      ----
197        Manual
84         Automatic
9          Disabled

如果需要该组的值，则首先需要转换为HashTable，如下所示。

Get-Service | Group-Object Status –AsHashTable -AsString

输出结果

Name             Value
----             -----
Stopped          {AarSvc_8f3023, AdobeFlashPlayerUpdateSvc, AJRo uter, ALG...}
Running          {AdobeARMservice, Appinfo, AudioEndpointBuilder , Audiosrv...}

现在我们对正在运行的服务感兴趣，因此服务的输出将存储在变量中，然后将使用“运行”值检索所需的输出。

$services = Get-Service | Group-Object Status -AsHashTable -AsString
$services.Running

输出结果

PS C:\WINDOWS\system32> $services.Running
Status          Name                   DisplayName
------          ----                   -----------
Running         AdobeARMservice        Adobe Acrobat Update Service
Running         Appinfo                Application Information
Running         AudioEndpointBu...     Windows Audio Endpoint Builder
Running         Audiosrv               Windows Audio
Running         AVP20.0                Kaspersky Anti-Virus Service 20.0
Running         BFE                    Base Filtering Engine
Running         BITS                   Background Intelligent Transfer Ser...
Running         Bluetooth Devic...     Bluetooth Device Monitor
Running         Bluetooth OBEX ...     Bluetooth OBEX Service
Running         BrokerInfrastru...     Background Tasks Infrastructure Ser...
Running         Browser                Computer Browser
Running         BTAGService            Bluetooth Audio Gateway Service
Running         BthAvctpSvc            AVCTP service
Running         bthserv                Bluetooth Support Service
Running         camsvc                 Capability Access Manager Service
Running         cbdhsvc_8f3023         Clipboard User Service_8f3023
Running         CDPSvc                 Connected Devices Platform Service
Running         CDPUserSvc_8f3023      Connected Devices Platform User Ser...
Running         ClickToRunSvc          Microsoft Office Click-to-Run Service
Running         ClipSVC                Client License Service (ClipSVC)

如何在PowerShell中使用Group-Object cmdlet？

示例

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