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We have a proprietary Windows financial program that exports a text file periodically. This file is extracted to a Windows directory by creating a series of temporary files & finally after removing these creates the final file. I'd like the file/directory to allow read/writes/deletes but no editing of a file once it has been created, I've messed about with Windows permissions with no success, does anyone have any ideas on how this could be accomplished?

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How could you allow writes, but disallow editing? Do you mean that want it to be possible to append the file, but not edit earlier contents? – sblair Oct 21 '11 at 14:48
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allow read/writes/deletes but no editing

As far as I know, Windows/NTFS does not distinguish between writes and edits.

does anyone have any ideas on how this could be accomplished?

Configure the program to export to a non-shared folder. Use something like robocopy to watch that folder, copy files to a shared folder with restricted permissions. Give robocopy elevated permissions (e.g. run as administrator).

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