Script for Member Count in list of Distribution List

Question

Hi All,
Would like to see your help in some powershell scripting. I am still a newbie in scripting for Exchange 2010 (Office 365). I am tasked to write a script that will count how many members in a list of distribution list. I have manage to come up with most of
the task, but I am not able to get the count. The error says Object not found. Below is my simple script. Hope someone can help me to see where are my mistakes in the script. This is how my script works, 
1. Generates a TXT file for the list of DLs
2. Get reads the TXT file and generates the user counts for each DL in the TXT file.
3. Output the results into a CSV file.
Get-DistributionGroup -Identity DL-ATD* | Select-Object DisplayName > DL.txt
$data = @()
$dls = get-content DL.txt
foreach ($dl in $dls) {
 $data += New-Object -TypeName PSObject -Property @{
  DisplayName = $dl
  Count = (Get-DistributionGroupMember -Identity  $dl  | Measure-Object).Count
$data | Export-Csv -Path mydllist.csv -NoTypeInformation
Thanks in advance.

Answer 1

Hi,
Thanks for the scripts, but the scripts mentioned are searching for all the DL which are available in the server. Is there a way I can look for like selected ones, for example any DL that starts with DL-ATD.xxxxx.
Thanks.