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如何从文件名中删除 (2020_11_23 09_41_34 UTC)

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如何从文件名中删除 (2020_11_23 09_41_34 UTC)

我尝试以管理员身份使用 Powershell 执行以下命令：

Get-ChildItem -Recurse | Where-Object { $_.Name -match " ?\(\d\d\d\d_\d\d_\d\d \d\d_\d\d_\d\d UTC\)" } | Rename-Item -NewName { $_.Name -replace " ?\(\d\d\d\d_\d\d_\d\d \d\d_\d\d_\d\d UTC\)", ""}

我收到很多错误：

Get-ChildItem : L'accès au chemin d'accès 'C:\Windows\system32\LogFiles\WMI\RtBackup' est refusé.
Au caractère Ligne:1 : 1
+ Get-ChildItem -Recurse | Where-Object { $_.Name -match " ?\(\d\d\d\d_ ...
+ ~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : PermissionDenied: (C:\Windows\syst...es\WMI\RtBackup:String) [Get-ChildItem], UnauthorizedAccessException
    + FullyQualifiedErrorId : DirUnauthorizedAccessError,Microsoft.PowerShell.Commands.GetChildItemCommand

我必须做什么？

答案1

除非该位置受到仅限管理员访问的保护，或者您创建了文件或具有执行所做操作的正确权限，否则不需要管理员帐户。

永远不要在未先检查结果的情况下执行破坏性代码（创建/修改/更新/删除/移动/重命名）。你会发现自己处于非常不利的境地。 因此，在所有情况下都应使用 -WhatIf 或 Confirm。

Powershell 最佳实践＃8：使用 WhatIf 并确认

Rename-Item -NewName ($_.Name -replace " ?\(\d\d\d\d_\d\d_\d\d \d\d_\d\d_\d\d UTC\)", "") -WhatIf

至于错误，你把这个问题复杂化了。可以简化为：

# Test create some test files
0..2 | 
ForEach-Object {New-Item -Path "D:\Temp\SomeFileName$PSItem(2020_11_23 09_41_34 UTC).txt" -WhatIf}
# Results
<#
What if: Performing the operation "Create File" on target "Destination: D:\Temp\SomeFileName0(2020_11_23 09_41_34 UTC).txt".
What if: Performing the operation "Create File" on target "Destination: D:\Temp\SomeFileName1(2020_11_23 09_41_34 UTC).txt".
What if: Performing the operation "Create File" on target "Destination: D:\Temp\SomeFileName2(2020_11_23 09_41_34 UTC).txt".
#>

# Create the test files
0..2 | 
ForEach-Object {New-Item -Path "D:\Temp\SomeFileName$PSItem(2020_11_23 09_41_34 UTC).txt"}
# Results
<#
    Directory: D:\Temp


Mode                 LastWriteTime         Length Name                                                                                                       
----                 -------------         ------ ----                                                                                                       
-a----         01-Dec-20     13:11              0 SomeFileName0(2020_11_23 09_41_34 UTC).txt                                                                 
-a----         01-Dec-20     13:11              0 SomeFileName1(2020_11_23 09_41_34 UTC).txt                                                                 
-a----         01-Dec-20     13:11              0 SomeFileName2(2020_11_23 09_41_34 UTC).txt  
#>

# Get files in path
(Get-ChildItem -Path 'D:\Temp' -Filter '*(2020_11_23 09_41_34 UTC)*').FullName
# Results
<#
D:\Temp\SomeFileName0(2020_11_23 09_41_34 UTC).txt
D:\Temp\SomeFileName1(2020_11_23 09_41_34 UTC).txt
D:\Temp\SomeFileName2(2020_11_23 09_41_34 UTC).txt
#>

# Delete the parens and all text between them
(Get-ChildItem -Path 'D:\Temp' -Filter '*(*').FullName | 
ForEach-Object {Rename-Item -Path $PSItem -NewName $($PSItem -replace '\(.*\)','') -WhatIf}
# Results
<#
What if: Performing the operation "Rename File" on target "Item: D:\Temp\SomeFileName0(2020_11_23 09_41_34 UTC).txt Destination: D:\Temp\SomeFileName0.txt".
What if: Performing the operation "Rename File" on target "Item: D:\Temp\SomeFileName1(2020_11_23 09_41_34 UTC).txt Destination: D:\Temp\SomeFileName1.txt".
What if: Performing the operation "Rename File" on target "Item: D:\Temp\SomeFileName2(2020_11_23 09_41_34 UTC).txt Destination: D:\Temp\SomeFileName2.txt".
#>

如果您确实需要日期字符串的正则表达式，那么您可以这样做：

(Get-ChildItem -Path 'D:\Temp' -Filter '*(*').FullName | 
ForEach-Object {Rename-Item -Path $PSItem -NewName $($PSItem -replace '\(\d{4}|\d{2}.|_|UTC\)','') -WhatIf}

删除 -WhatIf 以完成任务并序列化更改。

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