Public/Test-IsGroupMember.ps1
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function global:Test-IsGroupMember { <# .EXTERNALHELP HelperFunctions.psm1-Help.xml #> [CmdletBinding()] param ( [Parameter(Mandatory = $true, Position = 0, HelpMessage = 'Enter User sAMAccountName')] [ValidateNotNullOrEmpty()] [String]$User, [Parameter(Mandatory = $true, Position = 1, HelpMessage = 'Enter the AD group name in sAMAccountName format')] [ValidateNotNullOrEmpty()] [Alias('grp')] [String]$Group ) begin { $strFilter = "(&(objectClass=Group)(name=" + $Group + "))" $objDomain = New-Object System.DirectoryServices.DirectoryEntry $objSearcher = New-Object System.DirectoryServices.DirectorySearcher } process { $objSearcher.SearchRoot = $objDomain $objSearcher.PageSize = 1000 $objSearcher.Filter = $strFilter $objSearcher.SearchScope = "Subtree" $colResults = $objSearcher.FindOne() $objItem = $colResults.Properties } end { ([string]$objItem.member).contains($User) } } #end function Test-IsGroupMember |