PowerShell: Creating the System Management Container

If you’ve ever worked with Systems Management Server (SMS) 2003 or System Center Configuration Manager (ConfigMgr / SCCM) 2007, you probably are familiar with the step of creating the “System Management” container underneath the “CN=System,DC=mydomain,DC=com” container in Active Directory. Normally you have to go into ADSIEdit.msc in order to do …

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Removing Permanent WMI Event Registrations

Introduction Since I’ve worked on the PowerEvents PowerShell module, several folks have been confused about how to remove event registrations once they’ve been created. I wrote some documentation that’s included in the download, that explains how to manually remove these registrations using the built-in wbemtest tool. This is the fool-proof …

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PowerShell: Cleaning Up Empty ConfigMgr Collections

Someone recently posted on the MyITforum ConfigMgr mailing list, asking how to delete a bunch of old, empty collections in ConfigMgr. I took this opportunity to write a simple PowerShell script that will do just that. The code simply iterates over all collections, looks to see if each collection has …

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PowerShell: PowerEvents Module

Hey guys, I haven’t written anything new in a while, because I’ve been working on a PowerShell module called PowerEvents. PowerEvents is a module that facilitates working with WMI (Windows Management Instrumentation) permanent event registrations. You can query for and respond to events, all from within WMI! PowerEvents simply makes …

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PowerShell: Dynamic Parameters and Parameter Validation

Background on Parameter Validation PowerShell advanced functions allow their creators to specify a fair amount of metadata that describes their parameters. One huge benefit of parameter declarations in PowerShell is that it’s possible to validate input right at the parameter level, before you execute any code in the body of …

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PowerShell Quick Tip: Determine STA Threading Mode

Some code in PowerShell requires you to use the Single-Threaded Apartment (STA) threading model. The PowerShell version 2.0 console host uses Multi-Threaded Apartment by default. The PowerShell Integrated Scripting Environment (ISE) uses the STA threading model. If you’re writing code using the WPK module included in the PowerShellPack, you will …

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PowerShell: Disable CapsLock

Here’s a quick code snippet that shows how to disable CapsLock using PowerShell, combined with some embedded C# and .NET Interop (aka. P/Invoke.NET) code. Credit goes to “BobS00327” for the C# code necessary to handle this. function Set-CapsLock([switch]$Disable = $true) { $CapsCtrl = @" using System; using System.Runtime.InteropServices; using System.Windows.Forms; …

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PowerGUI: Save Time, Customize Snippets

Introduction Quest’s PowerGUI Integrated Development Environment (IDE) offers the ability to insert code snippets, similar to Microsoft Visual Studio. This saves a lot of typing, and gives you the general framework for whichever PowerShell construct you’re trying to us, for which you only need to fill in the specifics. These …

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PowerShell: ConfigMgr WMI Provider (feat. Lazy Properties)

What are Lazy Properties? So if you’re a script writer, and you also use System Center Configuration Manager 2007 (ConfigMgr), you may have run into a concept called Lazy Properties. Lazy properties are certain (not all) properties on certain (not all) WMI classes, within the ConfigMgr provider namespace, that are …

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PowerShell Module: Enable Wake for Devices

So in my last post, I shared a PowerShell script that enables you to enable devices to wake up computers. This script relies solely on a WMI interface, but despite the remote nature of WMI, I had provided no method of entering a remote computer name. That changes with the …

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