Util to search for invalid file or folder names

I'm looking for a util, a free util that is. that will search a folder structure and check all of the file and folder names for invalid characters and give those path names - could save it in text document - back to user.

Now I could probably write this myself.  (Hint: use the dir command and pipe results to text file and then go through the text file line by line and check each character) but I'm feeling lazy and someone might know of such a util and gain themselves points.

All this is to stop robocopy or my Linux server making noises when they come across these file or folder names.
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dbruntonAsked:
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becraigCommented:
Do you have a list of characters you would like to filter for ?


you  could do this in powershell easily
gci c:\folder -recurse | ? {$_.Psiscontainer } | % {if ($_.name -like "*characters*") {$_.name | out-file c:\report -append}}

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dbruntonAuthor Commented:
Hmm.

I'll have to do some experimenting.
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Joe Winograd, Fellow&MVEDeveloperCommented:
Hi dbrunton,

The following characters are not allowed in windows folder/file names:

< (less than)
> (greater than)
: (colon)
" (double quote)
/ (forward slash)
\ (backslash)
| (vertical bar or pipe)
? (question mark)
* (asterisk)
Integer value zero (ASCII NUL character)
Integer values 1-31 (except for alternate data streams where these characters are allowed)

On the other hand, Unix/Linux allows everything in file names except "/" (forward slash) and integer value zero (ASCII NUL character). So I guess the issue is that you have files created on your Linux server that have characters in the file name which are valid on Linux but invalid on Windows. The reverse is not possible, that is, you can't create a file/folder name in Windows that Linux would consider invalid. So I would think that your comment "this is to stop robocopy or my Linux server making noises" could only be half true — if I'm understanding this right (and I may not be), I don't see how the Linux server could be making noises about file/folder names — only Windows should be making noise. Right? Regards, Joe
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becraigCommented:
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dbruntonAuthor Commented:
Yep, it is the Windows box complaining I believe.  Not confirmed.  There's a low beep noise from somewhere.

Oohh, I'll be looking at that script later.
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dbruntonAuthor Commented:
Sorry for delay.

Finally ran script after I worked out how to use Powershell.  Never used it before so this was all new.

Powershell does not like my Linux box.  The script errored out there with lots of complaints.  Does not like Linux filenames.

On the local drive it works OK.  There's work to be done there on some file names.
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XIPRELAYCommented:
which versions of powershell does that script work with ? sorry if that sounds like a stupid question.
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dbruntonAuthor Commented:
I ran it on Windows 7 which is Powershell 3.0

I suspect it will probably run on 2.0 but don't know about 1.0
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