about_providers - PowerShell command help and examples

Describes how Windows PowerShell providers provide access to data and (about_providers)

Describes how Windows PowerShell providers provide access to data and components that would not otherwise be easily accessible at the command line. The data is presented in a consistent format that resembles a file system drive.
Windows PowerShell providers are Microsoft .NET Framework-based programs that make the data in a specialized data store available in Windows PowerShell so that you can view and manage it. The data that a provider exposes appears in a drive, and you access the data in a path like you would on a hard disk drive. You can use any of the built-in cmdlets that the provider supports to manage the data in the provider drive. And, you can use custom cmdlets that are designed especially for the data. The providers can also add dynamic parameters to the built-in cmdlets. These are parameters that are available only when you use the cmdlet with the provider data. BUILT-IN PROVIDERS Windows PowerShell includes a set of built-in providers that you can use to access the different types of data stores. Provider Drive Data store -------- ----- ---------- Alias Alias: Windows PowerShell aliases Certificate Cert: x509 certificates for digital signatures Environment Env: Windows environment variables FileSystem * File system drives, directories, and files Function Function: Windows PowerShell functions Registry HKLM:, HKCU Windows registry Variable Variable: Windows PowerShell variables WS-Management WSMan WS-Management configuration information * The FileSystem drives vary on each system. You can also create your own Windows PowerShell providers, and you can install providers that others develop. To list the providers that are available in your session, type: get-psprovider INSTALLING AND REMOVING PROVIDERS Windows PowerShell providers are delivered to you in Windows PowerShell snap-ins, which are .NET Framework-based programs that are compiled into .dll files. The snap-ins can include providers and cmdlets. Before you use the provider features, you have to install the snap-in and then add it to your Windows PowerShell session. For more information, see about_PsSnapins. You cannot uninstall a provider, although you can remove the Windows PowerShell snap-in for the provider from the current session. If you do, you will remove all the contents of the snap-in, including its cmdlets. To remove a provider from the current session, use the Remove-PsSnapin cmdlet. This cmdlet does not uninstall the provider, but it makes the provider unavailable in the session. You can also use the Remove-PsDrive cmdlet to remove any drive from the current session. This data on the drive is not affected, but the drive is no longer available in that session. VIEWING PROVIDERS To view the Windows PowerShell providers on your computer, type: get-psprovider The output lists the built-in providers and the providers that you added to the session. THE PROVIDER CMDLETS The following cmdlets are designed to work with the data exposed by any provider. You can use the same cmdlets in the same way to manage the different types of data that providers expose. After you learn to manage the data of one provider, you can use the same procedures with the data from any provider. For example, the New-Item cmdlet creates a new item. In the C: drive that is supported by the FileSystem provider, you can use New-Item to create a new file or folder. In the drives that are supported by the Registry provider, you can use New-Item to create a new registry key. In the Alias: drive, you can use New-Item to create a new alias. For detailed information about any of the following cmdlets, type: get-help <cmdlet-name> -detailed CHILDITEM CMDLETS Get-ChildItem CONTENT CMDLETS Add-Content Clear-Content Get-Content Set-Content ITEM CMDLETS Clear-Item Copy-Item Get-Item Invoke-Item Move-Item New-Item Remove-Item Rename-Item Set-Item ITEMPROPERTY CMDLETS Clear-ItemProperty Copy-ItemProperty Get-ItemProperty Move-ItemProperty New-ItemProperty Remove-ItemProperty Rename-ItemProperty Set-ItemProperty LOCATION CMDLETS Get-Location Pop-Location Push-Location Set-Location PATH CMDLETS Join-Path Convert-Path Split-Path Resolve-Path Test-Path PSDRIVE CMDLETS Get-PSDrive New-PSDrive Remove-PSDrive PSPROVIDER CMDLETS Get-PSProvider VIEWING PROVIDER DATA The primary benefit of a provider is that it exposes its data in a familiar and consistent way. The model for data presentation is a file system drive. To use data that the provider exposes, you view it, move through it, and change it as though it were data on a hard drive. Therefore, the most important information about a provider is the name of the drive that it supports. The drive is listed in the default display of the Get-PsProvider cmdlet, but you can get information about the provider drive by using the Get-PsDrive cmdlet. For example, to get all the properties of the Function: drive, type: get-psdrive Function | format-list * You can view and move through the data in a provider drive just as you would on a file system drive. To view the contents of a provider drive, use the Get-Item or Get-ChildItem cmdlets. Type the drive name followed by a colon (:). For example, to view the contents of the Alias: drive, type: get-item alias: You can view and manage the data in any drive from another drive by including the drive name in the path. For example, to view the HKLM\Software registry key in the HKLM: drive from another drive, type: get-childitem hklm:\software To open the drive, use the Set-Location cmdlet. Remember the colon when you specify the drive path. For example, to change your location to the root directory of the Cert: drive, type: set-location cert: Then, to view the contents of the Cert: drive, type: get-childitem MOVING THROUGH HIERARCHICAL DATA You can move through a provider drive just as you would a hard disk drive. If the data is arranged in a hierarchy of items within items, use a backslash (\) to indicate a child item. Use the following format: drive:\location\child-location\... For example, to change your location to the HKLM\Software registry key, type a Set-Location command, such as: set-location hklm:\software You can also use relative references to locations. A dot (.) represents the current location. For example, if you are in the HKLM:\Software\Microsoft registry key, and you want to list the registry subkeys in the HKLM:\Software\Micrsoft\PowerShell key, type the following command: get-childitem .\powershell FINDING DYNAMIC PARAMETERS Dynamic parameters are cmdlet parameters that are added to a cmdlet by a provider. These parameters are available only when the cmdlet is used with the provider that added them. For example, the Cert: drive adds the CodeSigningCert parameter to the Get-Item and Get-ChildItem cmdlets. You can use this parameter only when you use Get-Item or Get-ChildItem in the Cert: drive. For a list of the dynamic parameters that a provider supports, see the Help file for the provider. Type: get-help <provider-name> For example: get-help certificate LEARNING ABOUT PROVIDERS Although all provider data appears in drives, and you use the same methods to move through them, the similarity stops there. The data stores that the provider exposes can be as varied as Active Directory locations and Microsoft Exchange Server mailboxes. For information about individual Windows PowerShell providers, type: get-help <ProviderName> For example: get-help registry For a list of Help topics about the providers, type: get-help * -category provider SEE ALSO about_Locations about_Path_Syntax C:\Windows>powershell get-help about_pssessions -full

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PowerShell: Describes how Windows PowerShell providers provide access to data and

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