How to get an variable output from remote pssession

arrays powershell powershell-remoting
PowerShell picture PowerShell · Jun 30, 2011 · Viewed 12.6k times · Source

I have a script to get virtual harddisk info from vmm, im executing it remotely from a server, currently im unable to get the variable value outside of the pssession in the local host, could you please help me out with achieveing the same.

PS C:\Windows\system32> enter-pssession iscvmm02
[iscvmm02]: PS C:\Users\su\Documents>Add-PSSnapin Microsoft.SystemCenter.VirtualMachineManager
[iscvmm02]: PS C:\Users\su\Documents>$hide= Get-VMMServer -ComputerName "iscvmm02.corp.avanade.org"
[iscvmm02]: PS C:\Users\su\Documents>$VM = Get-VM | where { $_.ComputerNameString -contains "idpsm02.corp.air.org" }
[iscvmm02]: PS C:\Users\su\Documents>$harddisk=$VM.VirtualHardDisks
[iscvmm02]: PS C:\Users\su\Documents>$h=$harddisk.length
[iscvmm02]: PS C:\Users\su\Documents>for($i=0;$i-lt$h;$i++){
    New-Variable -Name "HardDiskType_$i" -value $harddisk[$i].vhdtype
    New-Variable -Name "HardDiskLocation_$i" -value $harddisk[$i].Location
}
[iadpscvmm02]: PS C:\Users\su\Documents>Exit-PSSession
PS C:\Windows\system32>$harddisktype_0
PS C:\Windows\system32>$harddisklocation_0

as you can see both the variable output's give null value, im unable to retain the values

Answer

vonPryz picture vonPryz · Jun 30, 2011

This example gets listing from remote computer's C drive and assigns it into a local variable. So tune your VMM script accordingly.

$session = New-PSSession -ComputerName RemoteSystem
Invoke-Command -Session $session -ScriptBlock { $remoteC = gci c:\ }
# This shouldn't print anything.
$localC
# Print the result on remote computer an assing its output to localC variable
$localC = Invoke-Command -Session $session  -ScriptBlock { $remoteC }
# Print the local variable, it should contain remoteC data.
$localC

Related questions

Array.Add vs +=

I've found some interesting behaviour in PowerShell Arrays, namely, if I declare an array as: $array = @() And then try to add items to it using the $array.Add("item") method, I receive the following error: Exception calling "Add" with "1" argument(…

Read More
Select the values of one property on all objects of an array in PowerShell

Let's say we have an array of objects $objects. Let's say these objects have a "Name" property. This is what I want to do $results = @() $objects | %{ $results += $_.Name } This works, but can it be done in a better way? If …

Read More
PowerShell array initialization

What's the best way to initialize an array in PowerShell? For example, the code $array = @() for($i=0; $i -lt 5;$i++) { $array[$i] = $FALSE } generates the error Array assignment failed because index '0' was out of range. At H:\Software\…

Read More