Question

我是Power-Shell的新手。请忍受我。

给出一个文本文件，其中包含多个文件路径，每个文件路径之间都用换行符分隔，我试图用同一文件的新路径替换每个文件路径。

示例：输入文件：

C:\Project\SharedLib\Shared\log4net.dll
C:\Project\SharedLib\Shared\Aspose.dll
C:\Dependency\SL\UnStable\Crystal.dll

输出文件：

\\ServerName\websites$\Stable\Release\log4net.dll
\\ServerName\websites$\Stable\Release\Aspone.dll
\\ServerName\websites$\Stable\Release\Crystal.dll

我的尝试

Get-ChildItem "*.txt" -Filter *.txt | 
Foreach-Object {

    foreach($line in Get-Content $_) {

        $currentPath = [System.IO.Path]::GetDirectoryName($line)
        ($line) -replace $currentPath, '\\ServerName\websites$\Stable\Release\' | Set-Content $line
    }
}

这在替换行上出错。请帮忙！

Answer 1

这使用Split-Path来获取文件名。然后它使用Join-Path来构建新的完整路径。 [咧嘴]

$SourceFile = "$env:TEMP\Reddy-In.txt"
$DestFile = "$env:TEMP\Reddy-Out.txt"

# create a file to work with
#    remove this section when ready to use your own data
@'
C:\Project\SharedLib\Shared\log4net.dll
C:\Project\SharedLib\Shared\Aspose.dll
C:\Dependency\SL\UnStable\Crystal.dll
'@ | Set-Content -LiteralPath $SourceFile

$Prefix = '\\ServerName\websites$\Stable\Release'

$InStuff = Get-Content -LiteralPath $SourceFile
$Results = foreach ($IS_Item in $InStuff)
    {
    $FileName = Split-Path -Path $IS_Item -Leaf
    Join-Path -Path $Prefix -ChildPath $FileName
    }

# display on screen
$Results

# send to a text file
$Results |
    Set-Content -LiteralPath $DestFile

屏幕输出...

\\ServerName\websites$\Stable\Release\log4net.dll
\\ServerName\websites$\Stable\Release\Aspose.dll
\\ServerName\websites$\Stable\Release\Crystal.dll

文本文件内容...

\\ServerName\websites$\Stable\Release\log4net.dll
\\ServerName\websites$\Stable\Release\Aspose.dll
\\ServerName\websites$\Stable\Release\Crystal.dll

Answer 2

我收到的错误消息是

The regular expression pattern C:\Project\SharedLib\Shared is not valid.
At C:\temp\StackOverflow.ps1:6 char:9
+         ($line) -replace $currentPath, '\\ServerName\websites$\Stable ...
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (C:\Project\SharedLib\Shared:String) [], RuntimeException
    + FullyQualifiedErrorId : InvalidRegularExpression

这告诉我字符串C：\ Project \ SharedLib被视为RegEx pattern-，我们需要对运算符进行转义。（这就是为什么您经常会看到反斜杠加倍的原因-它们被转义了。）

无需记住它们的全部-您可以使用[regex] :: escape（$ currentPath）为您完成。

Get-ChildItem "*.txt" -Filter *.txt | 
Foreach-Object {

    foreach($line in Get-Content $_) {

        $currentPath = [System.IO.Path]::GetDirectoryName($line)
        ($line) -replace [regex]::escape($currentPath), '\\ServerName\websites$\Stable\Release\' | Set-Content $line
    }
}

Powershell脚本-将TextPath中提供的所有URI替换为FilePath

2 个答案: