-WhatIf/-Confirm Parameters

Several of the core PowerShell cmdlets support –whatif and/or –confirm parameters. The cmdlets that support these parameters could actually make system changes that cannot be reserved, such as deleting a file.

Consider the following example using these parameters:

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PS>New-Item -Type File -Path file.tmp    Directory: Microsoft.PowerShell.Core\FileSystem::C:\bookMode                LastWriteTime     Length Name----                --------------     ------ -----a---          8/4/2008  10:33 PM          0 file.tmpPS>Remove-Item -Path file.tmp -WhatIfWhat if: Performing operation "Remove File" on Target"C:\book\file.tmp".PS>

Two new cmdlets are demonstrated in the preceding example: New-Item ...

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