Rename-item: Cannot rename because item at ... does not exist [duplicate] - powershell

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batch renaming files using powershell
(1 answer)
Closed 2 years ago.
I am lost with simple rename-item. Need to change names of folders to "01", "02", "03"... Tried everything but at the end I get this "Item doesn't exist". Sorry for dumb question but I am looking for a solution all day.
PS C:\Users\admin>
$nr = 1
Dir E:"Data-test" | %{Rename-Item $_ -NewName (‘{0}’ -f $nr++)}
Rename-Item : Cannot rename because item at 'ert' does not exist.
At line:3 char:23
+ Dir E:"Data-test" | %{Rename-Item $_ -NewName (‘{0}’ -f $nr++)}
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Rename-Item], PSInvalidOperationException
+ FullyQualifiedErrorId : InvalidOperation,Microsoft.PowerShell.Commands.RenameItemCommand
Rename-Item : Cannot rename because item at 'ukh' does not exist.
At line:3 char:23
+ Dir E:"Data-test" | %{Rename-Item $_ -NewName (‘{0}’ -f $nr++)}
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Rename-Item], PSInvalidOperationException
+ FullyQualifiedErrorId : InvalidOperation,Microsoft.PowerShell.Commands.RenameItemCommand
Rename-Item : Cannot rename because item at 'yph' does not exist.
At line:3 char:23
+ Dir E:"Data-test" | %{Rename-Item $_ -NewName (‘{0}’ -f $nr++)}
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Rename-Item], PSInvalidOperationException
+ FullyQualifiedErrorId : InvalidOperation,Microsoft.PowerShell.Commands.RenameItemCommand

Answer 1

user14915444's helpful answer has provided the crucial pointer:
The problem is that Windows PowerShell situationally stringifies Get-ChildItem (dir) output objects by file name rather than by full path, necessitating the use of $_.FullName rather than just $_; the problem has been fixed in PowerShell [Core] v6.1+ - see this answer for details.
However, in your case the problem can be avoided altogether, by piping the Get-ChildItem output directly to Rename-Item, using a delay-bind script block, which also speeds up the operation:
[ref] $nr = 1
Get-ChildItem E:Data-test | Rename-Item -NewName { '{0}' -f $nr.Value++ } -WhatIf
Note: The -WhatIf common parameter in the command above previews the operation. Remove -WhatIf once you're sure the operation will do what you want.
Note the use of a [ref] variable, which enables incrementing the sequence number across input objects from inside the delay-bind script block. This is necessary, because delay-bind script blocks run in a child scope of the caller's scope - unlike the script blocks passed to ForEach-Object (%) and Where-Object (?).
See GitHub issue #7157 for a discussion of this discrepancy.

Answer 2

Your script works fine. (At least the first variation.) You can't run it but once because you rename the file it is working with (i.e. "Data-Test"). I just created a Data-Test file on my E: drive and ran your script without issue once. Then, on second attempt, it couldn't work because it worked the first time.
If you are working with the contents of a directory named "Data-Test," you need to append your $_ with .FullName. (EX: Rename-Item $_.FullName -NewName ...)
See image:
If it still doesn't work, ensure that you have a file/folder named "Data-Test" in the CWD of your E: drive. Placing a backslash in the location will guarantee you are working in the root. (EX: E:\Data-Test)