Hello,
if you want to list all the powered-on virtual machines without vmware tools installed, you can use this powercli script:
# Change the value of this variable (regular expression), if you would want just some datastores (not all) from the script's output
$datastores=".+"
get-vm | where-object {$_.powerstate -ne "PoweredOff" } | % { get-view $_.ID } | where-object { ($_.Datastore -match $datastores) -and ($_.guest.toolsstatus -Notmatch ".*Ok.*") } | select Name
(Remember to use the Connect-VIServer cmdlet before!)
The script is based in this script.
Best regards,
Pablo