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Asked: 2025-02-23 12:44:39 +0800 CST

如何在 PowerShell 中操作和清理 -WhatIf 的输出？

  • 772

-WhatIf中文件重命名操作的参数输出。目标是删除输出的某些部分，但即使经过多次尝试，我还是无法让它工作。以下是我尝试过的方法：

Set-Location "C:\Path\To\Directory"

$Replace1  = 'Item: C:\Path\To\Directory\'
$Replace2  = 'What if: Performing the operation `"Rename File`" on target'
$Replace3  = 'Destination: C:\Path\To\Directory\'
$VarIvExp  = "GCI -Path . -Filter *.pdf | Ren -New { `$_.Name -replace ' ', '_' -replace '-', '_' } -Whatif ;"

# Various attempts to capture and replace parts of the output:
Invoke-Expression $VarIvExp            | % { ($_ 3>&1).Replace($Replace1,'').Replace($Replace2,'').Replace($Replace3,'') }
Invoke-Expression $VarIvExp.ToString() | % { ($_ 3>&1).Replace($Replace1,'').Replace($Replace2,'').Replace($Replace3,'') }

Invoke-Expression $VarIvExp 3>&1       | % {  $_.ToString().Replace($Replace1,'').Replace($Replace2,'').Replace($Replace3,'')       }
Invoke-Expression $VarIvExp.ToString() | % { ($_.ToString() 3>&1).Replace($Replace1,'').Replace($Replace2,'').Replace($Replace3,'') }

Invoke-Expression $VarIvExp.ToString() | % {  $_            | out-string -Replace $Replace1,'' -Replace $Replace2,'' -Replace $Replace3,'' }
Invoke-Expression $VarIvExp            | % {  $_.ToString() |            -Replace $Replace1,'' -Replace $Replace2,'' -Replace $Replace3,'' }

Invoke-Expression $VarIvExp 3>&1       | % {  $_            | out-string -Replace $Replace1,'' -Replace $Replace2,'' -Replace $Replace3,'' }
Invoke-Expression $VarIvExp.ToString() | % {  $_            |            -Replace $Replace1,'' -Replace $Replace2,'' -Replace $Replace3,'' }
Invoke-Expression $VarIvExp            | % {  $_.ToString() |            -Replace $Replace1,'' -Replace $Replace2,'' -Replace $Replace3,'' }
  • 输出：
What if: Performing the operation "Rename File" on target "Item: C:\Path\To\Directory\SomeText  I nº 001-SMSCBMRJ-20250222.pdf" Destination: C:\Path\To\Directory\SomeText__I_nº_001_SMSCBMRJ_20250222.pdf
What if: Performing the operation "Rename File" on target "Item: C:\Path\To\Directory\SomeText  I nº 002-SMSCBMRJ-20250222.pdf" Destination: C:\Path\To\Directory\SomeText__I_nº_002_SMSCBMRJ_20250222.pdf
What if: Performing the operation "Rename File" on target "Item: C:\Path\To\Directory\SomeText II nº 001-SMSCBMRJ-20250222.pdf" Destination: C:\Path\To\Directory\SomeText_II_nº_001_SMSCBMRJ_20250222.pdf
What if: Performing the operation "Rename File" on target "Item: C:\Path\To\Directory\SomeText II nº 002-SMSCBMRJ-20250222.pdf" Destination: C:\Path\To\Directory\SomeText_II_nº_002_SMSCBMRJ_20250222.pdf

注意：我还尝试过直接在 上进行各种操作$Results，但没有成功。以下是使用 进行的尝试$Results...$Results.Replace('various attempts','')

Set-Location "C:\Path\To\Directory"
$Replace1  = 'Item: C:\Path\To\Directory\'
$Replace2  = 'What if: Performing the operation `"Rename File`" on target'
$Replace3  = 'Destination: C:\Path\To\Directory\'

$VarIvExp  = "GCI -Path . -Filter *.pdf | Ren -New { `$_.Name -replace ' ', '_' -replace '-', '_' } -Whatif ;"

$Results = Invoke-Expression $VarIvExp

$Results = Invoke-Expression $VarIvExp.Replace( -Replace $Replace1,'' -Replace $Replace2,'' -Replace $Replace3,'')

$Results.ToString().Replace($Replace1,'').Replace($Replace2,'').Replace($Replace3,'')
  • 期望/预期输出：
SomeText  I nº 001-SMSCBMRJ-20250222.pdf SomeText__I_nº_001_SMSCBMRJ_20250222.pdf
SomeText  I nº 002-SMSCBMRJ-20250222.pdf SomeText__I_nº_002_SMSCBMRJ_20250222.pdf
SomeText II nº 001-SMSCBMRJ-20250222.pdf SomeText_II_nº_001_SMSCBMRJ_20250222.pdf
SomeText II nº 002-SMSCBMRJ-20250222.pdf SomeText_II_nº_002_SMSCBMRJ_20250222.pdf
powershell

1 个回答

  1. Best Answer

    正如在本期中所见，-WhatIf输出目前无法以有效的方式利用 - 这是一项功能提案。它直接打印到控制台。

    有一些解决方法，例如这个围绕将命令作为单独的进程运行来捕获直接输出，例如：

    (&pwsh -c $VarIvExp).Replace($Replace1,'').Replace($Replace2,'').Replace($Replace3,'')

    另一个最常提到的方法是将会Start-Transcript话中的所有内容临时记录到文件中，但使用起来相当笨重。

    • 2

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