Arrêt d'une VM et attente de son extinction

Powershell -command "c:\NomScriptPowerShell.ps1" -v NomVm

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Clear-Host

param  
(  
   [string]$VIserver,
   [string]$VILogin,
   [string]$VIMotdepasse,
   [string]$VMName,
   [switch]$verbose,
   [switch]$debug 
)  

Clear-Host

#Definition de 2 variables globales
$global:MyVar01 = ""
$global:MyVar02 = ""

$VIserver = "Nom vCenter"
$VILogin = "domaine\login" #Domaine\login avec droits de connexion au vCenter
$VIMotdepasse = "YourPassword" #Mot de passe pour connexion au vCenter

function main()  
{  
	asnp vmware* #Import modules VMWares
	$ErrorActionPreference = "Continue" 
	if ($verbose) {$VerbosePreference = "Continue"}  
	if ($debug) {$DebugPreference = "Continue"}
	
	$DebugPreference = "SilentlyContinue"

	CheckVIToolKit
	Connect-VIServer -Server $VIserver -User $VILogin -Password $VIMotdepasse

	Write-Host "Traitement de $VMName"
	$UneLigne = $VMName
	$UneVM = Get-VM -Name $VMName

	Write-Host $UneVM.PowerState #Juste pour afficher si la VM est allumée ou non
	$Error.Clear()
	Write-Host $UneVM.PowerState
	if ($UneVM.PowerState -eq "PoweredOn") {
		Write-Host "Shutdown guest de $UneLigne"
		Shutdown-VMGuest -VM $UneVM -Confirm:$false		
	}			

	while ($UneVM.PowerState -eq "PoweredOn") {
		sleep 4
		$UneVM = Get-VM -Name $UneLigne #On est obligé de refaire un Get-VM sur la machine pour avoir un statut de PowerState à jour. C'est très con.
		Write-Host "$($UneVM.PowerState) : Attente"
	}

	write-host "$VMName est maintenant eteint"

}  

function CheckVIToolKit()  
{  
    ## Before we do anything we must check to see if the user has the VI toolkit installed.  
    ## If user does not then we prompt the user and exit.  
    $Error.Clear()  
    Get-PSSnapin vmware*  
    if($Error.Count -ne 0)  
    {  
        Clear-Host  
        Write-Host "`n`n`t`t ERROR - To run this script, the VI Toolkit must be installed and registered with Powershell. If the VI Tollkit is installed," -foregroundcolor red -backgroundColor yellow  
        Write-Host "`t`t go to the Settings menu in Powershell Plus and click on Manage Snapins." -foregroundcolor red -backgroundColor yellow  
#        Read-Host  "`n`n`t Press <Enter> to continue."  
        break  
    }  

}## EOF: CheckVIToolKit()

Function ParseCommand($oArgs){

	#Parses the command line and fills the script variables 
	#with the appropriate values.

#	$test = "-n,test"
#	$oArgs = $test.split(",")
	$ArgCount = 0
	if (!$oArgs.length -gt 0){
		write-host "No arguments specified."
	}

	While ($ArgCount -lt $oArgs.length){
		switch ($oArgs[$ArgCount].ToLower()){
			"-v"{
				$global:MyVar01 = $oArgs[($ArgCount+1)]
				$ArgCount = ($ArgCount + 2)
				write-host "-v : $MyVar01"
			}

			default{
				write-host "Invalid command."
#				Help
				exit			
			}
		}
	}
}

#Parse commands
ParseCommand($args)

$VMName = $MyVar01
write-host "VMName : $VMName"

## Run Main
main

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