PowerShell 测试路径在脚本块中不起作用

Question

我有以下 PowerShell 代码，用于测试文件是否存在于脚本块中：

$scriptblock =
{ 
    Param($filename)

    return "Scriptblock filename $filename Exists? -> $(Test-Path $filename)"
}

$myFilename = "MyFile.xml"
Write-Host "Main filename $myFilename Exists? -> $(Test-Path $myFilename)"

$job = Start-Job -Name "myJob" -ScriptBlock $scriptBlock -ArgumentList $myFilename
$result = Receive-Job -Name "myJob"
Write-Host $result

当我运行它时，我得到以下输出，表明该文件存在于主执行中但不存在于脚本块中。

Main filename MyFile.xml Exists? -> True
Scriptblock filename MyFile.xml Exists? -> False

有人可以指出在脚本块中测试文件是否存在需要什么吗？

谢谢！

Answer 1

作为最佳实践，您可能应该包括要测试的文件的完整路径，而不是依赖于当前目录（如果您运行不同用户上下文下的脚本，则可能会有所不同).

$scriptblock = { 
    param($filename)

    "Scriptblock filename $filename Exists? -> $(Test-Path $filename)"
}

$myFilename = "C:\Temp\MyFile.xml"
"Main filename $myFilename Exists? -> $(Test-Path $myFilename)"

Start-Job -Name "myJob" -ScriptBlock $scriptBlock -ArgumentList $myFilename
Receive-Job -Name "myJob"

PowerShell 测试路径在脚本块中不起作用

PowerShell Test-Path not working in scriptblock

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scriptblock