Set-Item

SYNOPSIS

Changes the value of an item to the value specified in the command.

SYNTAX

Path (Default)

Set-Item [-Path] <String[]> [[-Value] <Object>] [-Force] [-PassThru] [-Filter <String>] [-Include <String[]>]
 [-Exclude <String[]>] [-Credential <PSCredential>] [-WhatIf] [-Confirm] [<CommonParameters>]

LiteralPath

Set-Item -LiteralPath <String[]> [[-Value] <Object>] [-Force] [-PassThru] [-Filter <String>]
 [-Include <String[]>] [-Exclude <String[]>] [-Credential <PSCredential>] [-WhatIf] [-Confirm]
 [<CommonParameters>]

DESCRIPTION

The `Set-Item` cmdlet changes the value of an item, such as a variable or registry key, to the value specified in the command.

EXAMPLES

Example 1: Create an alias

Set-Item -Path alias:np -Value "c:\windows\notepad.exe"

Example 2: Change the value of an environment variable

Set-Item -Path env:UserRole -Value "Administrator"

Example 3: Modify your prompt function

Set-Item -Path function:prompt -Value {'PS '+ (Get-Date -Format t) + " " + (Get-Location) + '> '}

Example 4: Set options for your prompt function

Set-Item -Path function:prompt -Options "AllScope,ReadOnly"

PARAMETERS

-Credential

> [!NOTE] > This parameter is not supported by any providers installed with PowerShell. > To impersonate another user, or elevate your credentials when running this cmdlet, > use Invoke-Command (../Microsoft.PowerShell.Core/Invoke-Command.md).

Type: System.Management.Automation.PSCredential
Parameter Sets: (All)
Aliases:

Required: False
Position: Named
Default value: Current user
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False

-Exclude

Specifies, as a string array, an item or items that this cmdlet excludes in the operation. The value of this parameter qualifies the Path parameter. Enter a path element or pattern, such as ` .txt`. Wildcard characters are permitted. The Exclude * parameter is effective only when the command includes the contents of an item, such as `C:\Windows*`, where the wildcard character specifies the contents of the `C:\Windows` directory.

Type: System.String[]
Parameter Sets: (All)
Aliases:

Required: False
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False

-Filter

Specifies a filter to qualify the Path parameter. The FileSystem (../Microsoft.PowerShell.Core/About/about_FileSystem_Provider.md)provider is the only installed PowerShell provider that supports the use of filters. You can find the syntax for the FileSystem filter language in about_Wildcards (../Microsoft.PowerShell.Core/About/about_Wildcards.md). Filters are more efficient than other parameters, because the provider applies them when the cmdlet gets the objects rather than having PowerShell filter the objects after they are retrieved.

Type: System.String
Parameter Sets: (All)
Aliases:

Required: False
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False

-Force

Forces the cmdlet to set items that cannot otherwise be changed, such as read-only alias or variables. The cmdlet cannot change constant aliases or variables. Implementation varies from provider to provider. For more information, see about_Providers (../Microsoft.PowerShell.Core/About/about_Providers.md). Even using the Force parameter, the cmdlet cannot override security restrictions.

Type: System.Management.Automation.SwitchParameter
Parameter Sets: (All)
Aliases:

Required: False
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False

-Include

Specifies, as a string array, an item or items that this cmdlet includes in the operation. The value of this parameter qualifies the Path parameter. Enter a path element or pattern, such as `" .txt"`. Wildcard characters are permitted. The Include * parameter is effective only when the command includes the contents of an item, such as `C:\Windows*`, where the wildcard character specifies the contents of the `C:\Windows` directory.

Type: System.String[]
Parameter Sets: (All)
Aliases:

Required: False
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False

-LiteralPath

Specifies a path to one or more locations. The value of LiteralPath is used exactly as it is typed. No characters are interpreted as wildcards. If the path includes escape characters, enclose it in single quotation marks. Single quotation marks tell PowerShell not to interpret any characters as escape sequences.

For more information, see about_Quoting_Rules (../Microsoft.Powershell.Core/About/about_Quoting_Rules.md).

Type: System.String[]
Parameter Sets: LiteralPath
Aliases: PSPath, LP

Required: True
Position: Named
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False

-PassThru

Passes an object that represents the item to the pipeline. By default, this cmdlet does not generate any output.

Type: System.Management.Automation.SwitchParameter
Parameter Sets: (All)
Aliases:

Required: False
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False

-Path

Specifies a path of the location of the items. Wildcard characters are permitted.

Type: System.String[]
Parameter Sets: Path
Aliases:

Required: True
Position: 0
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False

-Value

Specifies a new value for the item.

Type: System.Object
Parameter Sets: (All)
Aliases:

Required: False
Position: 1
Default value: None
Accept pipeline input: True (ByPropertyName, ByValue)
Accept wildcard characters: False

-Confirm

Prompts you for confirmation before running the cmdlet.

Type: System.Management.Automation.SwitchParameter
Parameter Sets: (All)
Aliases: cf

Required: False
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False

-WhatIf

Shows what would happen if the cmdlet runs. The cmdlet is not run.

Type: System.Management.Automation.SwitchParameter
Parameter Sets: (All)
Aliases: wi

Required: False
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False

CommonParameters

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.

INPUTS

System.Object

You can pipe an object that represents the new value of the item to this cmdlet.

OUTPUTS

None or an object representing the new or changed item.

This cmdlet generates an object that represent the item, if you specify the PassThru parameter. Otherwise, this cmdlet does not generate any output.

NOTES

`Set-Item` is not supported by the PowerShell FileSystem provider. To change the values of items in the file system, use the `Set-Content` cmdlet. - In the Registry drives, `HKLM:` and `HKCU:`, `Set-Item` changes the data in the (Default) value of a registry key. - To create and change the names of registry keys, use the `New-Item` and `Rename-Item` cmdlet. - To change the names and data in registry values, use the `New-ItemProperty`, `Set-ItemProperty`, and `Rename-ItemProperty` cmdlets. - `Set-Item` is designed to work with the data exposed by any provider. To list the providers available in your session, type `Get-PsProvider`. For more information, see about_Providers (../Microsoft.PowerShell.Core/About/about_Providers.md).