Accessing remote (Invoke-Command) array variable in local session

Question

I am trying to access the array variable outside the invoke command. I tried the below code, where I cannot access the remote array variable from my local session.

$serverlist = @("server1", "server2")

foreach ($server in $serverlist) {
    #Write-Host $computer

    $vinodh = Invoke-Command -ComputerName $server -ScriptBlock {
        $testVar = @("Stack", "over", "flow")
    }
}
foreach ($vars in $testVar) {
    Write-Host $vars # Unable to get the values as stack,over, flow
}

Actual results: unable to get values.

I expect the output as

stack
over
flow

Patrick · Accepted Answer · 2019-10-30 07:42:23Z

1

Variables set inside the remote session were not populated to the local powershell session (About Scopes). You could return the values from the invoked session for using later.

$ReturnValues = Invoke-Command -ComputerName $Server -ScriptBlock {
    $testVar=@("Stack","over","flow")
    return  $testVar #return data
}

foreach ($ReturnValue in $ReturnValues)
{
    $ReturnValue
}

answered Oct 30, 2019 at 7:42

Patrick

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3 Comments

Ansgar Wiechers Over a year ago

Note that using the return keyword is not required. PowerShell by default returns all non-captured regular output.

Vinodh Elumalai Over a year ago

Thanks for your response, can we return multiple array variable ?

Vinodh Elumalai Over a year ago

Can we return multiple array variable and then i need to iterate each of them using for loop

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