CmdID / PowerShell / Cmdlets / Clear
Clear-Item
Clears the contents of an item, but does not delete the item. PowerShell reference
From the PowerShell reference
10 parameters
Alias cli
What it does
Clears the contents of an item, but does not delete the item. The Clear-Item cmdlet clears the content of an item, but it does not delete the item. For example, the Clear-Item cmdlet can delete the value of a variable, but it does not delete the variable. The value that used to represent a cleared item is defined by each PowerShell provider. This cmdlet is similar to Clear-Content, but it works on aliases and variables, instead of files.
Clear-Item [-Path] <String[]> [-Force] [-Filter <String>] [-Include <String[]>] [-Exclude <String[]>] [-Credential <PSCredential>] [-WhatIf] [-Confirm] [-UseTransaction] [<CommonParameters>]Clear-Item -LiteralPath <String[]> [-Force] [-Filter <String>] [-Include <String[]>] [-Exclude <String[]>] [-Credential <PSCredential>] [-WhatIf] [-Confirm] [-UseTransaction] [<CommonParameters>]Clear the value of a variable
Clear-Item Variable:TestVar1IdentifyClear all registry entries
Clear-Item HKLM:\Software\MyCompany\MyKey -ConfirmIdentifyIts page in the reference: Clear-Item.
Parameters
-CredentialNOTE: 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.-ExcludeSpecifies, 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.-FilterSpecifies 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.-ForceIndicates that the cmdlet clears items that cannot otherwise be changed, such as read- only aliases. The cmdlet cannot clear constants. Implementation varies from provider to provider. For more information, see about_Providers. The cmdlet cannot override security restrictions, even when the Force parameter is used.-IncludeSpecifies, 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.-LiteralPathSpecifies 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.-PathSpecifies the path to the items being cleared. Wildcard characters are permitted. This parameter is required, but the parameter name Path is optional.-UseTransactionIncludes the command in the active transaction. This parameter is valid only when a transaction is in progress. For more information, see about_Transactions.-ConfirmPrompts you for confirmation before running the cmdlet.-WhatIfShows what would happen if the cmdlet runs. The cmdlet is not run.