http://social.technet.microsoft.com/wiki/contents/articles/5819.ad-powershell-for-active-directory-administrators.aspx Computer object commands List all computer accounts in a domain Get-ADComputer –Filter {Name –Like "*"} View all computers that are logged in for 90 days to the Active Directory Search-ADaccount -AccountInactive -Timespan 90 -ComputersOnly OR $lastLogon = (get-date).adddays(-90).ToFileTime() Get-ADComputer -filter {lastLogonTimestamp -gt $lastLogon} Find and delete all disabled Computer accounts in Active Directory Search-ADAccount -AccountDisabled -ComputersOnly | Sort-Object | Remove-ADComputer Find and delete disabled computer accounts from a specific OU Search-ADAccount -AccountDisabled -Searchbase "OU=IT,DC=Contoso,DC=Com" -ComputersOnly | Sort-Object | Remove-ADComputer Find and delete all computer accounts that no longer have signed up since 11/20/2011 to the Active Directory Search-ADAccount -AccountInactive -DateTime "20.11.2011...