PowerShell重命名

我的powershell脚本：

$dst = 'C:\Temp'

#Get all folders in $dst
$folders = Get-ChildItem $dst | ?{ $_.PSIsContainer }

foreach($folder in $folders)
{
    $cnt = (Get-ChildItem -filter *.txt $folder | Measure-Object).Count

    $base = ($folder.FullName -split " \[.*\]$")[0]
    $newname = $("{0} [{1}]" -f $base,$cnt)

    Write-Host $folder.FullName "->" $newname

    Rename-Item $folder.FullName $newname
}
 
 问题 
 
 在我第一次运行时，我得到了这个： 
 
PS C:\Temp> C:\Temp\RenameFolders.ps1
C:\Temp\m1 -> C:\Temp\m1 [1]
 
 在我的第二次运行中，我得到这个： 
 
PS C:\Temp> C:\Temp\RenameFolders.ps1
C:\Temp\m1 [1] -> C:\Temp\m1 [0]
Rename-Item : Cannot rename because item at 'C:\Temp\m1 [1]' does not exist.
At C:\Temp\RenameFolders.ps1:15 char:5
+     Rename-Item $folder.FullName $newname
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Rename-Item], PSInvalidOperationException
    + FullyQualifiedErrorId : InvalidOperation,Microsoft.PowerShell.Commands.RenameItemCommand
 
 我知道问题出在'['和']'，但我真的不明白为什么。 
 
 有人能解释我为什么是这个问题？ 
My powershell script:
 
$dst = 'C:\Temp'

#Get all folders in $dst
$folders = Get-ChildItem $dst | ?{ $_.PSIsContainer }

foreach($folder in $folders)
{
    $cnt = (Get-ChildItem -filter *.txt $folder | Measure-Object).Count

    $base = ($folder.FullName -split " \[.*\]$")[0]
    $newname = $("{0} [{1}]" -f $base,$cnt)

    Write-Host $folder.FullName "->" $newname

    Rename-Item $folder.FullName $newname
}
 
The problem
 
On my first run I get this:
 
PS C:\Temp> C:\Temp\RenameFolders.ps1
C:\Temp\m1 -> C:\Temp\m1 [1]
 
On my second run I get this:
 
PS C:\Temp> C:\Temp\RenameFolders.ps1
C:\Temp\m1 [1] -> C:\Temp\m1 [0]
Rename-Item : Cannot rename because item at 'C:\Temp\m1 [1]' does not exist.
At C:\Temp\RenameFolders.ps1:15 char:5
+     Rename-Item $folder.FullName $newname
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Rename-Item], PSInvalidOperationException
    + FullyQualifiedErrorId : InvalidOperation,Microsoft.PowerShell.Commands.RenameItemCommand
 
I know that the problem is in '[' and ']', but I realy can't understand why. 
 
Can someone explain me why is that a problem?
                
最满意答案
                
                    
                        
 如果您正在运行PS 3 +，请将-LiteralPath切换至您的重命名： 
 
Rename-Item -LiteralPath $folder.FullName $newname
 
 否则使用Move-Item 
 
Move-Item -LiteralPath $folder.FullName $newname
 
 Powershell不喜欢文件名中的方括号，更多内容在以下文章中 ： 
 
 
 
 当V2将方括号添加到通配符集以支持“blobbing”时，这成为V2的一个问题。 
 
 
 从get-help about_wildcards ： 
 
 
 
 Windows PowerShell支持以下通配符。 
 
 
 通配符描述示例匹配不匹配 
 
 
 
  
  
 匹配零或a * a，ag，苹果香蕉多字符 
 ？ 完全匹配？在某个位置上运行一个字符 
 []匹配范围[al] ook书，厨师，看看人物 
 []匹配指定的[bc] ook书，厨师勾人物 
 
  
 
 [和]是特殊字符。 
If you are running PS 3+ add -LiteralPath switch to your rename:
 
Rename-Item -LiteralPath $folder.FullName $newname
 
otherwise use Move-Item
 
Move-Item -LiteralPath $folder.FullName $newname
 
Powershell doesn't like square brackets in filenames, more in the following post:
 
 
 
This became an issue with V2 when they added the square brackets to the wildcard character set to support "blobbing".
 
 
From get-help about_wildcards:
 
 
 
Windows PowerShell supports the following wildcard characters.
 
 
Wildcard Description Example Match No match
 
 
 
  
  
Matches zero or a* A, ag, Apple banana more characters
 
? Matches exactly ?n an, in, on ran one character in the specified position
 
[ ] Matches a range [a-l]ook book, cook, look took of characters
 
[ ] Matches specified [bc]ook book, cook hook characters
 
  
 
[ and ] are special characters.