Set-Item

语法

Path （默认值）

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

LiteralPath

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

说明

示例

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"

参数

-Confirm

Prompts you for confirmation before running the cmdlet.

参数属性

参数集

-Credential

参数属性

参数集

-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.

参数属性

参数集

-Filter

Specifies a filter to qualify the Path parameter. The FileSystem 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. 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.

参数属性

参数集

-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. Even using the Force parameter, the cmdlet cannot override security restrictions.

参数属性

参数集

-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.

参数属性

参数集

-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.

参数属性

参数集

-PassThru

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

参数属性

参数集

-Path

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

参数属性

参数集

-UseTransaction

Includes the command in the active transaction. This parameter is valid only when a transaction is in progress. For more information, see about_Transactions.

参数属性

参数集

-Value

Specifies a new value for the item.

参数属性

参数集

-WhatIf

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

参数属性

参数集

CommonParameters

输入

Object

输出

None or an object representing the new or changed item.

备注

相关链接

• Clear-Item
• Copy-Item
• Get-Item
• Invoke-Item
• Move-Item
• New-Item
• Remove-Item
• Rename-Item
• about_Providers