Public/Find-MDSUserName.ps1

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function Find-MDSUserName {
    <#
    .SYNOPSIS
    Retrieve users' account usernames based on full or partial name search.

    .Parameter NameValue
    The full or partial name of the user or users.

    .Parameter FilterAttribute
    Specify a single attribute to query. Default value uses Ambiguous Name Resolution (ANR) which searches up to 17 name related attributes in Active Directory.

    .DESCRIPTION
    The Get-MDSUserName function uses the Get-ADUser cmdlet to query Active Directory for all users

    .EXAMPLE
    Find-MDSUserName Smith

    .EXAMPLE
    Find-MDSUserName Smi

    .EXAMPLE
    Find-MDSUserName -GivenName John

    .EXAMPLE
    Find-MDSUserName -GivenName Jo

    .EXAMPLE
    Find-MDSUserName John -FilterAttribute Surname

    .EXAMPLE
    Find-MDSUserName John,Smith -FilterAttribute Surname

    .EXAMPLE
    Find-MDSUserName 12345 -FilterAttribute EmployeeID
    #>


    #requires -Module ActiveDirectory

    Param(
        [parameter(Mandatory=$true)]
        [string[]]$NameValue,

        [parameter(Mandatory=$false)]
        [string]$FilterAttribute='ANR'
    )

    Begin {}
    Process {
        ForEach ($User in $NameValue) {
            # Get SAM Account Name for specified user
            Get-ADUser -Filter "$FilterAttribute -like '$User*'" |
                Select-Object GivenName,SurName,SamAccountName,UserPrincipalName
        }
    }
    End {}

} # End Find-MDSUserName