[R-SIG-Mac] Case distinction on a Mac.

[Rolf Turner]

On 20/02/2009, at 1:28 PM, Steve Revilak wrote:

>> From: Rolf Turner <r.turner at auckland.ac.nz>
>> Date: Fri, 20 Feb 2009 12:47:46 +1300
>> Subject: [R-SIG-Mac] Case distinction on a Mac.
>
>> I have noticed that OS X sometimes fails to make a case  
>> distinction in
>> the names of files.  E.g. if I have a file ``junk'' and I try to  
>> create
>> a directory using ``mkdir Junk'' it will refuse to do so saying  
>> ``file
>> exists''.
>>
>> Likewise I have just noticed that in R
>>
>> 	file.exists(".Rdata")
>>
>> returns TRUE when no file .Rdata exists (but there *is* a  
>> file .RData).
>>
>> This strikes me as an undesirable, uh, feature.  Is there any way  
>> that
>> I can tell OS X to smarten up about this?
>
> Out of the box, OS X filesystems are formatted as HFS+, which is case
> insensitive (but case preserving).
>
> There is are variants of HFS+ that are case sensitive; Disk Utility
> refers to them variant as "Mac OS Extended (Case Sensitive)" and "Mac
> OS Extended (Case Sensitive, journaled)".
>
> If you'd like the file system to be case sensitive, you'll need to
> format the drive that way.

Oooooohhhh boy!  That sounds way beyond my (very limited) capabilities.

Thanks anyway.

	cheers,

		Rolf Turner

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