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Name: download hologram iphone
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In case you were wondering why the WMI based posts seem to have dried up – I have opened a new blog.
Turns out the ComputerName parameter doesn’t work but a comment on the blog shows how Jeffrey Hicks solved the problem.
we can see the individual information. Going through the Win32_NetworkAdapterSetting class is tedious but now we now that the adapter’s DeviceId is linked to the Configurations Index we can use this ASSOCIATION via a bit of WQL.
Categories.
WMICookbook: Read Routing Table.
but we get a few ugly looking entries.
PS> Receive-Job -Id 4.
If we look at Win32_NetworkAdapterSetting.
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The ExcludeProperty takes a wild card to identify the properties with two underscore characters at the front.
Simple but effective.
that we may not actually want or need.
Get-WmiObject - " | select -Property *
What we get now is a listing at our PowerShell prompt when a new process starts. We can keep working and the data comes through when the prompt is idle.
PS> Register-WmiEvent -Query "Select * FROM Win32_ProcessStartTrace" -Action.
Id Name State HasMoreData Location Command -- ---- ----- ----------- -------- ------- 3 8d4246a5-5f8. Running True $Event.SourceEventArgs.
This gives use this information for the three classes.
Register-WMIEvent allows us to specify the class we want to use rather than a query – however if we try that we don’t get anything returned - oops.
Note: Win32_IP4RouteTable is only available on Windows 2003 and later.
If we look at the adapter and its configuration.
__GENUS __CLASS __SUPERCLASS __DYNASTY __RELPATH __PROPERTY_COUNT __DERIVATION __SERVER __NAMESPACE __PATH.
Id Name State HasMoreData Location Command -- ---- ----- ----------- -------- ------- 2 c1016218-f80. Running True $Event | gm.
PS> Register-WmiEvent -Query "Select * FROM Win32_ProcessStartTrace" -Action.
If we want to see all of the properties we can do this.
The main trick with WMI is finding out the class or classes we need to actually use. The standard PowerShell way of searching for classes is to use the –List parameter. Network Adapters are common items we need to deal with so we’ll see what WMI can tell us. First, what WMI classes deal with Network Adapters. One thing we can do with –List is give a partial class name and a wildcard to restrict the results (otherwise we get lots, and lots of classes returned). To begin with I’m only interested in the name of the class. I’m working in the default name space so don’t need to mention it.
So we have a set of classes that are all associated through the network adpater device id. In the next few posts we will dig into this web and see what we can discover and how we can use these associations to help us understand our system.
We could now go off to MSDN and check what these classes do but we can find that information directly. As Jeffrey showed recently http://blogs.msdn.com/powershell/archive/2009/08/30/exploring-wmi-w... we can use the –Amended parameter to show the description property.
I have decided to spend some time digging into WMI and will document the findings in a (long) series of blog posts. I also intend to pull the information together into a document that will be available for download. The scripts will end up in PowerShell modules that will also be available for download.
PS> Register-WmiEvent -Query "Select * FROM Win32_ProcessStartTrace" -Action.
Our function takes a single parameter – a computer name (or IP address) I’ve used the advanced function parameters to this function operates on the pipeline. We then create a .NET class to hold our data – we will be accessing a couple of WMI classes so we’ll make the presentation neat. The class is added using Add-Type.
WMI is a wonderful thing and like many people I have a love-hate relationship with it. It is incredibly powerful, and can take you deep into the system, but it is not easy to find your way.
Looking through the help for Register-WMIEvent shows that we have the possibility of performing an action when the event occurs. The action scriptblock can use a number of variables including $Event, $EventSubscriber, $Sender, $SourceEventArgs, and $SourceArgs automatic variables. Wanting to understand these variables I tried dumping it though get-member.
DHCPEnabled : True IPAddress : DefaultIPGateway : DNSDomain : ServiceName : athr Description : Atheros AR5007 802.11b/g WiFi Adapter Index : 11.
As an aside I really like this technique for collecting data together into a single object. Its neater and easier to use than Add-Member.
We can easily filter them out if desired.
This gets us to this script which is modified from the PowerShell Team blog.
__CLASS ------- Win32_PnPEntity Win32_ComputerSystem Win32_NetworkAdapterConfiguration Win32_IRQResource Win32_DeviceMemoryAddress Win32_NetworkProtocol Win32_SystemDriver.
Name MemberType Definition ---- ---------- ---------- ParentProcessID Property System.UInt32 ParentProcessID ProcessID Property System.UInt32 ProcessID ProcessName Property System.String ProcessName SECURITY_DESCRIPTOR Property System.Byte[] SECURITY_DESCRIPTOR SessionID Property System.UInt32 SessionID Sid Property System.Byte[] Sid TIME_CREATED Property System.UInt64 TIME_CREATED __CLASS Property System.String __CLASS __DERIVATION Property System.String[] __DERIVATION __DYNASTY Property System.String __DYNASTY __GENUS Property System.Int32 __GENUS __NAMESPACE Property System.String __NAMESPACE __PATH Property System.String __PATH __PROPERTY_COUNT Property System.Int32 __PROPERTY_COUNT __RELPATH Property System.String __RELPATH __SERVER Property System.String __SERVER __SUPERCLASS Property System.String __SUPERCLASS.
PS> Receive-Job -Id 3.
$data = @( ) Get-WmiObject -Class Win32_IP4RouteTable -ComputerName $computer | foreach $route = New-Object -TypeName WmiIPRoute $route . Destination = $_ . Destination $route . Mask = $_ . Mask $route . NextHop = $_ . NextHop $route . Metric = $_ . Metric1 $filt = "InterfaceIndex='" + $_ . InterfaceIndex + "'" $ip = ( Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter $filt -ComputerName $computer ) . IPAddress.
Search.
I will be covering the rest of the PowerShell world from here.
## create class for object $source = @" public class WmiIPRoute private string _destination; private string _mask; private string _nexthop; private string _interface; private int _metric;
Id Name State HasMoreData Location Command -- ---- ----- ----------- -------- ------- 3 8d4246a5-5f8. NotStarted False $Event.SourceEventArgs.
The properties look similar to those we saw in the last post. Lets dig into SourceEventArgs.
In my previous post ( http://richardsiddaway.spaces.live.com/blog/cns!43CFA46A74CF3E96!2598.entry or http://richardsiddaway.spaces.live.com/blog/cns!43CFA46A74CF3E96!2598.entry ) I started to look at WMI events in PowerShell v2. The win32_process class was used but all that showed us was that a process had started. We need a bit more information. A bit of digging brought up the Win32_ProcessStartTrace class that seems to do what we want.
PS> Get-WmiObject -List "Win32_NetworkAdapter*" | Select Name.
PowerShell and WMI.
Richard Siddaway's Blog.
And see that we have a few properties to play with. ComputerName may come in useful if we are dealing with remote machines.
WMI migration.
Next we will look at closing a process and recording the data in a log.
A PowerShell MVPs site.
When we need to troubleshoot networking problems we will sometimes need to read the routing table on a machine. The routing table contains the information on the routes known to the network interfaces. This can be created automatically or manually . On the local machine we can use the route command to find this information – but how do we find it on a remote machine. WMI has a class that enables us to read the routing table.
I am doing this with PowerShell v2 on Windows 7. Where necessary, and wherever possible, I will give alternatives that can be used with PowerShell v1.
PowerShell WMI events.
Just for PowerShell and WMI.
WMI CookBook: Associators Pt I.
The subscription runs as a PowerShell job. Using the opening of Notepad to trigger the event we can see that data is returned.
PS> Get-WmiObject -Query "ASSOCIATORS OF " | Select __CLASS -Unique.
Id Name State HasMoreData Location Command -- ---- ----- ----------- -------- ------- 4 0857a744-1d3. NotStarted False $Event.SourceEventArgs.
PS> Receive-Job -Id 2.
Name MemberType Definition ---- ---------- ---------- Equals Method bool Equals(System.Object obj) GetHashCode Method int GetHashCode() GetType Method type GetType() ToString Method string ToString() ComputerName Property System.String ComputerName EventIdentifier Property System.Int32 EventIdentifier MessageData Property System.Management.Automation.PSObject MessageData RunspaceId Property System.Guid RunspaceId Sender Property System.Object Sender SourceArgs Property System.Object[] SourceArgs SourceEventArgs Property System.EventArgs SourceEventArgs SourceIdentifier Property System.String SourceIdentifier TimeGenerated Property System.DateTime TimeGenerated.
Monthly Archive.
I figure there is enough subject matter in the topic to support a separate site.
The Win32_NetworkAdapter class represents a network adapter on a Win32 system. The Win32_NetworkAdapterConfiguration class represents the attributes and behaviors of a network adapter. This class has been extended to include extra properties and methods that support the management of the TCP/IPprotocols (and are independent of the network adapter). The Win32_NetworkAdapterSetting class represents an association between a network adapter and its configuration settings.
You didn’t think I’d really give you my MAC address did you?
As with other PowerShell objects there is a default format for the display of WMI objetcs. If we look at the NetworkAdapter class.

Name MemberType Definition ---- ---------- ---------- Equals Method bool Equals(System.Object obj) GetHashCode Method int GetHashCode() GetType Method type GetType() ToString Method string ToString() Context Property System.Object Context NewEvent Property System.Management.ManagementBaseObject NewEvent.
Only thing here that look interesting is NewEvent.
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Get-WmiObject -Query "ASSOCIATORS OF WHERE Result >
Now we have got to the information we need. So how can we use this. Up to now we have just allowed the job to run and then picked the data from the job. One option is to write the data to the prompt as shown in this example http://blogs.msdn.com/powershell/archive/2009/08/30/exploring-wmi-w.... A lot of this digging was because I didn’t understand how this was put together. PowerShell really is the best way to discover how to use PowerShell!!
we will see an entry for each adapter that links the adapter with its configuration. This information is paired like this:
Name ---- Win32_NetworkAdapter Win32_NetworkAdapterConfiguration Win32_NetworkAdapterSetting.
We can then add our route to the data. When all the routes are collected we can display the data. The data could be output onto the pipeline but at the moment I can’t think what else to do with it so we’ll leave it like this for now.
The other thing to think about is what other associations exist.
ServiceName : athr MACAddress : 00:00:00:00:00:00 AdapterType : Ethernet 802.3 DeviceID : 11 Name : Atheros AR5007 802.11b/g WiFi Adapter NetworkAddresses : Speed : 54000000.
WMI CookBook: WMI Presentation.
Id Name State HasMoreData Location Command -- ---- ----- ----------- -------- ------- 2 c1016218-f80. NotStarted False $Event | gm.
We can then use Get-WmiObject - >
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