如何在Windows Powershell中区分两个文件夹？

我正在尝试使用Windows Powershell查找两个文件夹结构的内容差异。我使用以下方法来确保文件名相同，但是该方法不会告诉我文件的内容是否相同：

$firstFolder = Get-ChildItem -Recurse folder1
$secondFolder = Get-ChildItem -Recurse folder2
Compare-Object -ReferenceObject $firstFolder -DifferenceObject $secondFolder

这个ServerFault问题中描述的技术适用于差异化单个文件，但是这些文件夹包含各种深度的数百个文件。

解决方案不一定需要告诉我文件中到底有什么不同-只是它们有所不同。我对元数据中的差异（例如日期）不感兴趣，我已经知道它们是不同的。

如果要将比较包装到循环中，则可以采用以下方法：

$folder1 = "C:\Users\jscott"
$folder2 = "C:\Users\public"

# Get all files under $folder1, filter out directories
$firstFolder = Get-ChildItem -Recurse $folder1 | Where-Object { -not $_.PsIsContainer }

$firstFolder | ForEach-Object {

    # Check if the file, from $folder1, exists with the same path under $folder2
    If ( Test-Path ( $_.FullName.Replace($folder1, $folder2) ) ) {

        # Compare the contents of the two files...
        If ( Compare-Object (Get-Content $_.FullName) (Get-Content $_.FullName.Replace($folder1, $folder2) ) ) {

            # List the paths of the files containing diffs
            $_.FullName
            $_.FullName.Replace($folder1, $folder2)

        }
    }   
}

请注意，这将忽略不存在的文件在这两个 $folder1和$folder2。

我对jscott的答案进行了扩展，以输出对那些对这种功能有深刻了解的人使用的文件，而不是另一个文件。请注意，它也显示了进度，因为鉴于巨大的文件夹差异不大，我很难看到它。脚本似乎挂在我身上了。这是该功能的powershell代码：

$folder1 = "C:\Folder1"
$folder2 = "C:\Folder2"

# Get all files under $folder1, filter out directories
$firstFolder = Get-ChildItem -Recurse $folder1 | Where-Object { -not $_.PsIsContainer }

$failedCount = 0
$i = 0
$totalCount = $firstFolder.Count
$firstFolder | ForEach-Object {
    $i = $i + 1
    Write-Progress -Activity "Searching Files" -status "Searching File  $i of     $totalCount" -percentComplete ($i / $firstFolder.Count * 100)
    # Check if the file, from $folder1, exists with the same path under $folder2
    If ( Test-Path ( $_.FullName.Replace($folder1, $folder2) ) ) {
        # Compare the contents of the two files...
        If ( Compare-Object (Get-Content $_.FullName) (Get-Content $_.FullName.Replace($folder1, $folder2) ) ) {
            # List the paths of the files containing diffs
            $fileSuffix = $_.FullName.TrimStart($folder1)
            $failedCount = $failedCount + 1
            Write-Host "$fileSuffix is on each server, but does not match"
        }
    }
    else
    {
        $fileSuffix = $_.FullName.TrimStart($folder1)
        $failedCount = $failedCount + 1
        Write-Host "$fileSuffix is only in folder 1"
    }
}

$secondFolder = Get-ChildItem -Recurse $folder2 | Where-Object { -not $_.PsIsContainer }

$i = 0
$totalCount = $secondFolder.Count
$secondFolder | ForEach-Object {
    $i = $i + 1
    Write-Progress -Activity "Searching for files only on second folder" -status "Searching File  $i of $totalCount" -percentComplete ($i / $secondFolder.Count * 100)
    # Check if the file, from $folder2, exists with the same path under $folder1
    If (!(Test-Path($_.FullName.Replace($folder2, $folder1))))
    {
        $fileSuffix = $_.FullName.TrimStart($folder2)
        $failedCount = $failedCount + 1
        Write-Host "$fileSuffix is only in folder 2"
    }
}

您只需围绕已回答此问题的链接问题的正确答案环绕一个循环，然后遍历目录树，比较每个具有相同名称的文件。

/ Edit：如果这实际上是您的问题，那么它对于您似乎是常规贡献者的SO更合适。您在问编程问题。我了解您这样做是出于sysadmin类型的目的，在这种情况下，我会告诉您使用WinDiff之类的专用工具。

做这个：

compare (Get-ChildItem D:\MyFolder\NewFolder) (Get-ChildItem \\RemoteServer\MyFolder\NewFolder)

甚至递归地：

compare (Get-ChildItem -r D:\MyFolder\NewFolder) (Get-ChildItem -r \\RemoteServer\MyFolder\NewFolder)

甚至很难忘记:)