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Dim oFSO, oTS, sComputer
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Set oFSO = CreateObject("ScriptingFileSystemObject") Set oTS = oFSOOpenTextFile("c:\inputtxt") Do Until oTSAtEndOfStream
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sComputer = oTSReadLine
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That is easy enough Now, for each, I need to retrieve a specified instance of Win32_NetworkAdapter The caption I'm looking for "Local Area Connection" is stored in a property named NetConnectionID TIP How did I know which property to use Simple: Wbemtest I clicked EnumInstances and typed Win32_NetworkAdapter as the superclass name Then, I double-clicked on the first instance that was returned to display its properties I scrolled down, looking for "Local Area Connection" in the values column, and I found it in a property named NetConnectionID If I hadn't found "Local Area Connection" at all, I would have tried the next instance in the list, and kept browsing until I found it
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Actually, I don't want to retrieve the Win32_NetworkAdapter instance at all Instead, I need to retrieve all associated Win32_NetworkAdapterConfiguration instances However, as I discovered earlier, I need to retrieve the DeviceID on my own, based on a simpler WQL query Here's the modified script
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Dim oFSO, oTS, sComputer
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Dim oWMI, oConfigs, oConfig, oAdapters, oAdapter
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Set oFSO = CreateObject("ScriptingFileSystemObject") Set oTS = oFSOOpenTextFile("c:\inputtxt")
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Do Until oTSAtEndOfStream
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sComputer = oTSReadLine
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This business of using associator classes is complicated, so I'm including an additional example of how they work For this example, let's say you want to list all of the shared folders on a particular file server, along with the physical file path that each share represents For each of those physical folders (or directories), you want to enable NTFS file compression Here's what you need to do Connect to WMI on a specified server Retrieve a list of Win32_Share class instances that represent file shares (as opposed to printer or other shares) For each instance, retrieve the physical folder as a Win32_Directory class For each physical folder, use the Compress method
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Listing 192 shows the entire script you'll need to use Listing 192 CompressAllvbs This script compresses all shared folders on a specified file server
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'get server name strComputer = InputBox("Server name ")
'connect to WMI Set objWMIService = GetObject("winmgmts:" & _ "\\" & strComputer & "\root\cimv2")
'retrieve the list of shares Set colShares = objWMIServiceExecQuery _ ("SELECT * FROM Win32_Share WHERE " & _ "Type = 0")
'for each share returned For Each objShare In colShares
'retrieve the associated folders Set colFolders = objWMIServiceExecQuery _
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Review
In this chapter, I've shown you how different WMI classes can be related to one another through associator classes I've also introduced you to the WQL ASSOCIATORS OF query, which allows you to query those relationships You've learned how to use Wbemtest to test your queries, incorporate your queries into a script, and then utilize the query results to perform administrative tasks By now, you should have a solid understanding of how WMI works from within a script, and how you can use it to both query and modify configuration settings within your computers You should feel comfortable working with the simpler queries that Scriptomatic or the PrimalScript WMI Query Wizard can generate for you, and you should be comfortable writing more complex queries that utilize WMI associations and class relationships As always, of course, the toughest part about WMI is figuring out which classes to query, but hopefully by now you're becoming comfortable with the WMI class reference in the MSDN Library, and you're able to browse through the class list and select the appropriate classes COMING UP You've seen how to work with all kinds of WMI information, so it's time to pull everything together into a complete script In the next chapter, I'll provide you with two complete WMI and ADSI sample scripts, so you can see how these technologies are used in real-world situations Then, in Part IV, I'll show you how to leverage everything you've learned so far to create Web-based administrative scripts that make a great addition to your administrative utility belt < Day Day Up >