比較子文件夾，並從我以前的帖子使用PowerShell

Question

複製文件在延續此： Comparing folders and content with PowerShell

...我試圖比較包含子文件夾（至少4級深）兩個目錄。第二個文件夾（folder2）包含我想要複製到第三個文件夾（folder3）的新文件和更新文件。到目前爲止，我的腳本並沒有像預期的那樣工作。第一個問題，folder2中的子文件夾需要在folder3中創建。做這個的最好方式是什麼？此外，並非所有文件（新的或更新的）都將從folder2複製到folder3。

總之，這裏是我的腳本：

$Folder1 = "D:\folder1" 
$Folder2 = "D:\folder2" 
$Folder3 = "D:\folder3" 

function Get-Directories ($path) 
{ 
    $PathLength = $path.length 
    gci $path -rec | % { 
     Add-Member -InputObject $_ -MemberType NoteProperty -Name RelativePath -Value $_.FullName.substring($PathLength+1) 
     $_ 
    } 
} 

Compare-Object (Get-Directories $Folder1) (Get-Directories $Folder2) -prop RelativePath, Name, Length | 
Sort RelativePath, Name, Length -desc | % { 
if ($file -ne $_.RelativePath) 
{ $_ } 
$file = $_.RelativePath 
} | Where-Object {$_.SideIndicator -eq "=>"} | ForEach-Object {Copy-Item ("$Folder2\" + $file) -Destination ("$Folder3\" + $file) -Force} 

Answer 1

我做了一些改動下面這似乎解決我的問題。

function Get-Directories ($path) 
{ 
    $PathLength = $path.length 
    Get-ChildItem $path -Recurse | % { 
     Add-Member -InputObject $_ -MemberType NoteProperty -Name RelativePath -Value $_.FullName.substring($PathLength+1) 
     $_ 
    } 
} 

Compare-Object (Get-Directories $Folder1) (Get-Directories $Folder2) -Property RelativePath, Name, Length | 
Sort RelativePath, Name, Length -desc | % { 
    if ($file -ne $_.RelativePath) { $_ } } | 
    Where-Object {$_.SideIndicator -eq "=>"} | 
    ForEach-Object { 
     $file = $_.RelativePath 
     Echo F | xcopy "$Folder2\$file" "$Folder3\$file" /S 
    }