As we saw in the previous post, Select queries can be used to retrieve instances of WMI class. But select queries are not the only way to query for instances. We can also use Associators Of keyword to the same. However, there is a difference. Select queries always return a collection of instances of a WMI class where as “Associators Of” returns a collection of WMI objects that belong to different WMI classes or associated WMI classes. Before we dig too much in to this, let us first understand what are associated WMI classes.

I have been using WMI a lot these days and got to play with WQL as well. In this series of posts, I want to write about how WMI Query Language (WQL) can be used to retrieve management data exposed by WMI. Yes, this has nothing to do with PowerShell but as a PowerShell lover (and a MVP now), I will use PowerShell for all my examples.

Windows Management Instrumentation (WMI) is the Microsoft implementation of Web-based Enterprise Management (WBEM), which is an industry initiative to develop a standard technology for accessing management information in an enterprise environment. WMI uses the Common Information Model (CIM) industry standard to represent systems, applications, networks, devices, and other managed components. CIM is developed and maintained by the Distributed Management Task Force (DMTF). We can write WMI scripts to automate several tasks on local or remote computer(s).

I just came back from the PowerShell / Bangalore ITPro UG meet. We had nearly 40 people showing up for this event. I spoke about getting started with PowerShell scripting and Ismail talked about Exchange 2010 migration. Here are the slides I used for my session.

If you were there at the session, please provide your feedback either here or as a tweet to @psbug. See you at the next meet.

In this part of the remoting series, we look at how CredSSP can be used for multi-hop authentication in PowerShell remoting. CredSSP and multi-hop support are not features of PowerShell 2.0 or PowerShell remoting, per se. Credential Security Service Provider (CredSSP) is a new security service provider that enables an application to delegate the user’s credentials from the client to the target server. Multi-hop support in Windows Remote Management uses CredSSP for authentication. Since PowerShell 2.0 remoting is built on top of WinRM, we can use CredSSP to perform multi-hop authentication.

In this part of the remoting series, we look at remoting output. This includes how the output is transferred from remote computer to local, how it is displayed and how we can format this output based on a need. We already discussed various methods to execute commands (part4, part 5 and part 6) on a remote computer. In this post, for the sake of our discussion of remoting output, I will use only Invoke-Command method to execute remote commands. However, I will point out the differences as required.