如何将文件夹中的文件关联为PowerShell中的其他文件？

我有文件夹A和B包含一些文件。未分配这些文件夹中的文件总数。 我想更改文件夹B中某个文件的名称，我想更改的总文件数取决于文件夹A中的总文件数。如果除以文件夹A，则为文件夹B的平均值

例如：

文件夹A文件（2个文件）：

ID_12345-ABC.txt ID_67890-DEF.txt 文件夹B文件（10个文件）：

NO_1111-A.txt NO_1111-B.txt NO_1111-C.txt NO_1111-D.txt NO_1111-E.txt NO_1111-F.txt NO_1111-G.txt ... NO_1111-J.txt 然后，我想更改文件夹B中的文件名。在这种情况下，我会将文件夹B中的每5个文件分配给文件A。 在文件夹B中，我将使用此文件名

12345-ABC_NO_1111-A.txt 12345-ABC_NO_1111-B.txt 12345-ABC_NO_1111-C.txt 12345-ABC_NO_1111-D.txt 12345-ABC_NO_1111-E.txt 67890-DEF_NO_1111-F.txt 67890-DEF_NO_1111-G.txt ... 67890-DEF_NO_1111-J.txt 12345-ABC_编号_1111-A.txt 12345-ABC_编号_1111-B.txt 12345-ABC_编号_1111-C.txt 12345-ABC_编号_1111-D.txt 12345-ABC_编号_1111-E.txt 67890-DEF_NO_1111-F.txt 67890-DEF_NO_1111-G.txt ... 67890-DEF_NO_1111-J.txt

---

任何人都可以告诉我这个案例的情况吗？

您可以通过以下方式进行：

# get an array of prefixes, taken from the file names in FolderA
$prefixes = Get-ChildItem -Path 'D:\FolderA' -File | ForEach-Object { $_.BaseName -replace '^ID_' } | Sort-Object
# get an array of FileInfo objects of all files in FolderB
$filesB = Get-ChildItem -Path 'D:\FolderB' -File | Sort-Object Name

if ($prefixes.Count -gt 0) {
    $batchSize = [Math]::Floor($filesB.Count / $prefixes.Count)  # number of items to receive the same prefix
    $offset    = 0
    foreach ($prefix in $prefixes) {
        for ($i = 0; $i -lt $batchSize; $i++) {
            $index = $offset * $batchSize + $i
            $filesB[$index] | Rename-Item -NewName ('{0}_{1}' -f $prefix, $filesB[$index].Name) -WhatIf
        }
        $offset++
    }
}
else {
    Write-Warning "No files found in FolderA. This would result in a 'Divide by Zero error'"
}

结果:

What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-A.txt Destination: D:\FolderB\12345-ABC_NO_1111-A.txt".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-B.txt Destination: D:\FolderB\12345-ABC_NO_1111-B.txt".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-C.txt Destination: D:\FolderB\12345-ABC_NO_1111-C.txt".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-D.txt Destination: D:\FolderB\12345-ABC_NO_1111-D.txt".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-E.txt Destination: D:\FolderB\12345-ABC_NO_1111-E.txt".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-F.txt Destination: D:\FolderB\67890-DEF_NO_1111-F.txt".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-G.txt Destination: D:\FolderB\67890-DEF_NO_1111-G.txt".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-H.txt Destination: D:\FolderB\67890-DEF_NO_1111-H.txt".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-I.txt Destination: D:\FolderB\67890-DEF_NO_1111-I.txt".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-J.txt Destination: D:\FolderB\67890-DEF_NO_1111-J.txt".

---

更新

从您的评论中，您还需要将重命名文件的扩展名更改为

.csv

，但还需要重命名因其不适合批处理而保留的任何文件

下面的代码将同时执行以下两项操作：

# get an array of prefixes, taken from the file names in FolderA
$prefixes = Get-ChildItem -Path 'D:\FolderA' -File | ForEach-Object { $_.BaseName -replace '^ID_' } | Sort-Object
# get an array of FileInfo objects of all files in FolderB
$filesB = Get-ChildItem -Path 'D:\FolderB' -File | Sort-Object Name

if ($prefixes.Count -gt 0) {
    $batchSize = [Math]::Floor($filesB.Count / $prefixes.Count)  # number of items to receive the same prefix
    $offset    = 0
    foreach ($prefix in $prefixes) {
        for ($i = 0; $i -lt $batchSize; $i++) {
            $index = $offset * $batchSize + $i
            $filesB[$index] | Rename-Item -NewName ('{0}_{1}.csv' -f $prefix, $filesB[$index].BaseName) -WhatIf
        }
        $offset++
    }
    # what to do with files that may remain?
    # this is one way of renaming them using random prefixes from the $prefixes array
    $remaining = $filesB.Count - $offset * $batchSize
    if ($remaining) {
        Write-Host "Renaming $remaining item(s) randomly" -ForegroundColor Yellow
    }
    while ($remaining -gt 0) {
        $randomPrefix = Get-Random $prefixes
        $filesB[-$remaining] | Rename-Item -NewName ('{0}_{1}.csv' -f $randomPrefix, $filesB[-$remaining].BaseName) -WhatIf
        $remaining--
    }
}
else {
    Write-Warning "No files found in FolderA. This would result in a 'Divide by Zero error'"
}

在FolderB中使用11个文件（11不能平均除以2，因此还有一个文件要重命名），结果是：

What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-A.txt Destination: D:\FolderB\12345-ABC_NO_1111-A.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-B.txt Destination: D:\FolderB\12345-ABC_NO_1111-B.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-C.txt Destination: D:\FolderB\12345-ABC_NO_1111-C.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-D.txt Destination: D:\FolderB\12345-ABC_NO_1111-D.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-E.txt Destination: D:\FolderB\12345-ABC_NO_1111-E.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-F.txt Destination: D:\FolderB\67890-DEF_NO_1111-F.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-G.txt Destination: D:\FolderB\67890-DEF_NO_1111-G.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-H.txt Destination: D:\FolderB\67890-DEF_NO_1111-H.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-I.txt Destination: D:\FolderB\67890-DEF_NO_1111-I.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-J.txt Destination: D:\FolderB\67890-DEF_NO_1111-J.csv".
Renaming 1 item(s) randomly
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-K.txt Destination: D:\FolderB\12345-ABC_NO_1111-K.csv".

---

如果对结果感到满意，请从

重命名项

cmdlet中删除

-WhatIf

开关。

从文件夹a中的文件创建要添加到文件夹B中文件的前缀列表。然后将文件夹B中的文件放入数组，并使用

for

循环更改文件名。根据循环计数器的值指定前缀。哇。。非常感谢你。它起作用了。但我有一个问题，如果文件夹a中的总文件除以文件夹B有Mod，Mod不能重命名它。重命名后还需要更改扩展名文件。你能帮帮我吗$Theo@Job当然，你希望新的扩展是什么？你想对保留的文件（Mod文件）做什么？扩展名是.csv，如果文件保留了，它将随机分配@Theo@job通过随机分配，您的意思是代码应该使用PowerShell控制台中FolderA？@job中的文件名中的随机名称对其进行重命名，请多次输入

“a”、“b”| Get random

。您应该看到随机返回的

a

或

b

# get an array of prefixes, taken from the file names in FolderA
$prefixes = Get-ChildItem -Path 'D:\FolderA' -File | ForEach-Object { $_.BaseName -replace '^ID_' } | Sort-Object
# get an array of FileInfo objects of all files in FolderB
$filesB = Get-ChildItem -Path 'D:\FolderB' -File | Sort-Object Name

if ($prefixes.Count -gt 0) {
    $batchSize = [Math]::Floor($filesB.Count / $prefixes.Count)  # number of items to receive the same prefix
    $offset    = 0
    foreach ($prefix in $prefixes) {
        for ($i = 0; $i -lt $batchSize; $i++) {
            $index = $offset * $batchSize + $i
            $filesB[$index] | Rename-Item -NewName ('{0}_{1}.csv' -f $prefix, $filesB[$index].BaseName) -WhatIf
        }
        $offset++
    }
    # what to do with files that may remain?
    # this is one way of renaming them using random prefixes from the $prefixes array
    $remaining = $filesB.Count - $offset * $batchSize
    if ($remaining) {
        Write-Host "Renaming $remaining item(s) randomly" -ForegroundColor Yellow
    }
    while ($remaining -gt 0) {
        $randomPrefix = Get-Random $prefixes
        $filesB[-$remaining] | Rename-Item -NewName ('{0}_{1}.csv' -f $randomPrefix, $filesB[-$remaining].BaseName) -WhatIf
        $remaining--
    }
}
else {
    Write-Warning "No files found in FolderA. This would result in a 'Divide by Zero error'"
}

What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-A.txt Destination: D:\FolderB\12345-ABC_NO_1111-A.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-B.txt Destination: D:\FolderB\12345-ABC_NO_1111-B.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-C.txt Destination: D:\FolderB\12345-ABC_NO_1111-C.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-D.txt Destination: D:\FolderB\12345-ABC_NO_1111-D.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-E.txt Destination: D:\FolderB\12345-ABC_NO_1111-E.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-F.txt Destination: D:\FolderB\67890-DEF_NO_1111-F.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-G.txt Destination: D:\FolderB\67890-DEF_NO_1111-G.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-H.txt Destination: D:\FolderB\67890-DEF_NO_1111-H.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-I.txt Destination: D:\FolderB\67890-DEF_NO_1111-I.csv".
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-J.txt Destination: D:\FolderB\67890-DEF_NO_1111-J.csv".
Renaming 1 item(s) randomly
What if: Performing the operation "Rename File" on target "Item: D:\FolderB\NO_1111-K.txt Destination: D:\FolderB\12345-ABC_NO_1111-K.csv".