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When I to run ren controller Controller in PowerShell I get this error message:

ren : Source and destination path must be different.
At line:1 char:1
+ ren .\controller Controller
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : WriteError: (D:\dev\www\tria...sses\controller:String) [Rename-Item], IOException
    + FullyQualifiedErrorId : RenameItemIOError,Microsoft.PowerShell.Commands.RenameItemCommand

How do I change the case of a file here?

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I guess the first question is why do you need too? As far as windows is concerned, those are the same name. –  EBGreen Jan 22 '13 at 21:27
    
Yes, but it's not the same on unix systems and I have some code files I need to correct because a library I'm using require them to have a certain case now, while earlier it didn't. –  Svish Jan 22 '13 at 21:41
1  
In powershell v3 I can modify the case of filenames using ren. What version of powershell are you using? –  zdan Jan 22 '13 at 23:02
    
@zdan How do I tell? I'm using whatever GitHub For Windows launches for me :p –  Svish Jan 23 '13 at 2:06
    
$host will tell you what version you are running –  Mike Jan 23 '13 at 13:09

2 Answers 2

It works for me:

PS C:\> "" > controller
PS C:\> ren .\controller Controller
PS C:\> dir Controller


    Directory: C:\


Mode                LastWriteTime     Length Name
----                -------------     ------ ----
-a---         1/22/2013   5:01 PM          6 Controller
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The OP's code also works for me, under PSH 3.0 and cmd. How about the old standby:

ren controller controller2
ren controller2 Controller

It's ugly, but it works.

Additional thought: Doesn't git have a rename, by way of the mv command? Relevant.

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