I need to know if I can trust the Modified Date attribute of a file, there is any way to make a file seem older than it truly is?


No, you cannot trust any of the date/time stamps on a file. It is relatively straightforward to change the timestamps

  • I've deliberately changed the last-modified date on files to keep certain people happy. You definately cannot trust it, at all. Jul 6 '09 at 21:33

You can't trust it - there are tools (such as 'touch') which allow you to set such file metadata.


  • touch(1) being a standard command in all Unix/Linux/BSD distributions that I have seen.
    – user1686
    Jul 7 '09 at 7:57

You can use robocopy command line which copies the modify date from the original file. Also there are a GUI tool for robocopy.

  • Also only vista supplied robocopy preserves folder dates.
    – Sergei
    Jul 7 '09 at 7:35

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