Illegal Characters Scanning Utility

We are preparing to upload a lot of company data to SharePoint online.

We know there are characters which are not permitted in folders and file names such as the ampersand (&). Is there a utility which we can run on the local data which will provide output of all the folders / files which will not be compliant and in an ideal world make changes?

If you try to upload folders / files which have illegal characters to SharePoint online, does it simply stop you or produce a report at the end?
HypervizorAsked:
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Vasil Michev (MVP)Commented:
The list of characters is not that big, if you remove the ones not allowed on NTFS filesystem anyway:

http://support.microsoft.com/kb/905231

To list such files, you can use PowerShell:

Get-ChildItem C:\ -Force -Recurse | ? {$_.Name -match "&|\#|~|%|\{|}|\+"}

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A quick way to list the names, replacing any invalid characters with space:

Get-ChildItem C:\ -Force -Recurse | ? {$_.Name -match "&|\#|~|%|\{|}|\+"} | foreach { $name = $_.Name -replace '&|\#|~|%|\{|}|\+',' '; echo $Name}

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HypervizorAuthor Commented:
Excellent, thanks.
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