How to Compress an NTFS Folder with PowerShell

Yes, I am actually taking a few minutes to write a blog entry. I was taking a year off but I'm having to much fun teaching my 90th PowerShell class right now. Here is a quick and easy question. "How do I compress a folder with PowerShell?"

We have a target of E:\Mod01. Here is the command.

Get-CimInstance -Query "SELECT * FROM CIM_Directory WHERE Name = 'E:\\Mod01'" |

Invoke-CimMethod -MethodName Compress

The CIM_Directory class has all that we need. The filter of 'E:\\Mod01' is not a typo. We need to escape the backslash with another backslash. This isolate the target so we do not compress other folders. This object is passed to Invoke-CimMethod where we call the Compress method.

Nice and easy. Remember to always verify that you are executing methods only against your intended target or really bad things can happen.

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Jason Yoder, MCT

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