Count VMs

#clear screen
cls
#remove any lingering variables
Remove-Variable -Name * -Force -ErrorAction SilentlyContinue
#add VMware snapin
Add-PSSnapin VMware.VimAutomation.Core -ErrorAction SilentlyContinue
#allow connection to mulitple vCenters
$set = Set-PowerCLIConfiguration -DefaultVIServerMode Multiple -confirm:$false
$set Out-Null #don't write output
foreach ($vCenter in 'vCenter1','vCenter2','vCenter3')
{
$connect = Connect-VIServer -Server $vCenter #connect to each vCenter
$connect Out-Null #don't write output
$vms = Get-VM
}
write-host "The total number of VMs in the environment is" $vms.count