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Does ROBOCOPY /XN exclude files that are newer in the SOURCE or files that are newer in the destination?

I checked Microsoft official documentation but it is totally ambiguous.

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It appears that the Robocopy /XN switch excludes files that are newer in the source from being copied to the destination directory. So if there is a newer file in the source folder than what is in the destination folder and you use the /XN parameter, then the file(s) will not be copied to the destination folder—I tested and confirmed that this is the case by simply testing it from a test folder with older and newer files of the same file name so that's how I confirmed.


Further Resources

  • Robocopy /?
    • /XN :: eXclude Newer files.

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