Find the OS of all Computers in the Domain

Quickie one liner

Get-ADComputer -Filter * -Property * | Format-Table Name,OperatingSystem,OperatingSystemService
Pack,OperatingSystemVersion -Wrap –Auto

Reference:

https://serverfault.com/questions/585223/how-to-list-all-computers-operating-system-on-a-network-in-powershell