$group = "MEINEGRUPPE" 
 
# https://technet.microsoft.com/en-us/library/ff730967.aspx
$strFilter = "(&(objectCategory=Group)(name=$group))"

$objDomain = New-Object System.DirectoryServices.DirectoryEntry

$objSearcher = New-Object System.DirectoryServices.DirectorySearcher
$objSearcher.SearchRoot = $objDomain
$objSearcher.PageSize = 1000
$objSearcher.Filter = $strFilter
$objSearcher.SearchScope = "Subtree"
 
$colProplist = "name","member"
foreach($i in $colPropList) {
    $objSearcher.PropertiesToLoad.Add($i)
} 

$colResults = $objSearcher.FindAll()

foreach($objResult in $colResults) {
    $objItem = $objResult.Properties
    # PHP-Style var_dump():
    #echo $objItem | %{echo $_;}

    $members = $objItem.member
    Write-Output $members
} 

$filename = "$group.txt"

$membersReadable = $members | Out-String
"$group" | Out-File -FilePath $filename 
"$membersReadable" | Out-File -FilePath $filename -append