Add local groups to local user account PS script

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5 years, 9 months ago.

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  • #7830

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    Hello, I am a PowerShell 3.0 novice and want to add a feature to my first ever production script tool.

    The script below will get all local user accounts from remote computers listed in a .txt file then export to .csv format.  How exactly can I incorporate what local groups each local user account is a member of?  For each local user account retrieved I want to list what local groups it is a member of.

    get-ciminstance -classname win32_useraccount -filter "localaccount='true'" -computername (get-content C:\PS\.txt) | export-csv c:\PS\_localuseraccounts.csv (export to .csv)

    Your insight is greatly appreciated,

    Matt, PS 3.0 novice

  • #7846

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    Group information is held in Win32_Group. You can see the relationship between users and groups by dumping the Win32_GroupUser instances. You will see a load of entries like this

    GroupComponent : Win32_Group (Name = "Administrators", Domain = "RSLAPTOP01")
    PartComponent : Win32_UserAccount (Name = "Administrator", Domain = "RSLAPTOP01")
    PSComputerName :
    CimClass : root/cimv2:Win32_GroupUser
    CimInstanceProperties : {GroupComponent, PartComponent}
    CimSystemProperties : Microsoft.Management.Infrastructure.CimSystemProperties

    WMI classes have associations – in this case there is an association between the Win32_User and the Win32_Group classes. The Win32_GroupUser can be thought of as the linking class. What we need to do to answer your question is to go from the individual instances of Win32_User (the users) to the associated groups.
    Something like this should do it

    $data = Get-CimInstance -ClassName Win32_UserAccount -Filter "LocalAccount = $true" |
    foreach {
      $groups = Get-CimAssociatedInstance -InputObject $PSItem -ResultClassName Win32_Group | select -ExpandProperty Name
      $PSItem | Add-Member -MemberType NoteProperty -Name "Groups" -Value ($groups -join ";") -PassThru
    $data | select Caption, Groups

    Alternatively pipe straight into you CSV

  • #7860

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  • #7866

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    Rank: Member

    Thanks Richard.  I apologize in advance for stupid questions for I am a PowerShell (and scripting in general) novice. 

    I tried to copy & paste into PS3 ISE the script you provided and it does not work.  What am I doing wrong?  As you can see from attached picture of my ISE, when running the selection of get-ciminstance... it works.  Maybe I am out of my depth in this forum.

    Another Q: I notice you do it -filter "LocalAccount = $true".  Is there a difference between that and “localaccount=’true’” ?


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