I've looked at some freely available C source code to change ctime of files, and wht it does is change the clock time, change a file's ctime to the "current time", and change the clock back. (I'll link to it if I can find it back.)

If this hack is the only way to achieve it, I think you can state it can't be done.

In reply to Re^3: Best practices for file synchronization? (Mod time vs. contents compare) by bart
in thread Best practices for file synchronization? (Mod time vs. contents compare) by OfficeLinebacker

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