如何将变量从远程 PowerShell 会话返回到本地 PowerShell 会话 [英] How to return a variable from a remote PowerShell session to a local PowerShell session

问题描述

我有一个 PowerShell 脚本，用于创建新的 PowerShell 会话.我需要将此会话中创建的无数变量中的一个变量返回到本地/调用会话.这是我的 PowerShell 脚本:

I have a PowerShell script that creates a new PowerShell session. I need to return one of the variables from the myriad of variables that is created in this session to the local / calling session. Here is my PowerShell script:

param
(
[string]$user,
[string]$password
)

$secure_password = ConvertTo-SecureString $password -AsPlainText -Force
$cred = New-Object System.Management.Automation.PSCredential $user, $secure_password

$new_session = New-PSSession -Credential $cred

$script = {
$var1 = 0
$var2 = a
}

Invoke-Command -Session $new_session -ScriptBlock $script

Write-Host ($var2)

当脚本执行 Write-Host ($var2) 时，它不会为 $var2 打印任何值.如何将 $var2 返回到本地会话?

When the script executes Write-Host ($var2), it doesn't print any value for $var2. How can I return $var2 to the local session?

推荐答案

param
(
[string]$user,
[string]$password
)

$secure_password = ConvertTo-SecureString $password -AsPlainText -Force
$cred = New-Object System.Management.Automation.PSCredential $user, $secure_password

$new_session = New-PSSession -Credential $cred

$script = {
    $var1 = 0
    $var2 = a
    $var2
}

$varFromSession = Invoke-Command -Session $new_session -ScriptBlock $script

Write-Host $varFromSession

只需使用 Write-Output 或 return 从会话的脚本块中返回变量，或者像我演示的那样在另一个命令中使用该变量.Invoke-Command 的返回值将是脚本块写入管道的任何内容.

Just return the variable from the session's scriptblock, either with Write-Output or return or just use the variable in another command as I've demonstrated. The return value of Invoke-Command will be whatever the scriptblock wrote to the pipeline.

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