Change Distribution groups to Universal

Hi,

We have few thousand distribution groups need changing from global to universal. I have the following Powershell command to change 'all' in one go, however i would like to do this in batches, can i call a file that contains lets say 100 distribution group names, how can i do this?

Get-Group | Where {$_.GroupType -eq "Global"} | Set-Group -Universal

Thanks