CODEWITHSUNDEEP
powershellwmi
user2176765
user2176765

Reputation: 81

PowerShell USBControllerDevice

I understand what the following command is doing, but what is the purpose of the '[wmi]'?

gwmi Win32_USBControllerDevice |
% {[wmi]($_.Dependent)} |
    Sort Manufacturer, Description,DeviceID | 
        ft Manufacturer, Description,DeviceID

Upvotes: 1

Views: 648

Answers (1)

Mark Wragg
Mark Wragg

Reputation: 23395

The correct command is:

gwmi Win32_USBControllerDevice | %{[wmi]($_.Dependent)} | Sort Manufacturer, Description,DeviceID | ft Manufacturer, Description,DeviceID

This looks to have been taken from the example on this page: https://msdn.microsoft.com/en-us/library/aa394505(v=vs.85).aspx but has been copied incompletely.

The % command is an alias for ForEach-Object. [wmi] is casting the Dependent property of each object returned from Get-WMIObject as a WMI object.

It then sorts and outputs as a table.

To learn more about what the [wmi] part does, see this blog post: https://mcpmag.com/articles/2013/07/23/object-spell-in-powershell.aspx

Upvotes: 1

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