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How to use Group-Object cmdlet in PowerShell?
As the name suggests, Group-Object is useful to group similar properties.
Example
Get-Service | Group-Object Status
Output
Count Name Group
----- ---- -----
160 Stopped {AarSvc_8f3023, AdobeFlashPlayerUpdateSvc, AJR outer, ALG...}
130 Running {AdobeARMservice, Appinfo, AudioEndpointBuilder, Audiosrv...}The above output is grouped with the Status (“Stopped” and “Running”). There is a total of 160 services are in Stopped status and 130 are in Running status.
Similarly, you can filter the group with the starttype property.
Get-Service | Group-Object StartType
Output
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...}If you need only Count and Name property use, − NoElement parameter.
Get-Service | Group-Object StartType -NoElement
Output
Count Name ----- ---- 197 Manual 84 Automatic 9 Disabled
If you need the values of the group, you first need to convert into HashTable as shown below.
Get-Service | Group-Object Status –AsHashTable -AsString
Output
Name Value
---- -----
Stopped {AarSvc_8f3023, AdobeFlashPlayerUpdateSvc, AJRo uter, ALG...}
Running {AdobeARMservice, Appinfo, AudioEndpointBuilder , Audiosrv...}Now we are interested in services that are running, so the output of services will be stored in a variable and then we will use the “Running” value to retrieve the desired output.
$services = Get-Service | Group-Object Status -AsHashTable -AsString $services.Running
Output
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)
Updated on: 07-Apr-2020
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