Paul Eggert wrote: > User processes can set the mtime after modifying the data (this is > normal, for applications such as cp -p) so tar cannot trust the mtime > here.
Note that cp -p does modify mtime, yes, but to match the record of the file which was copied from. It is highly unlikely that such a new mtime would be equal to the old mtime to the millisecond. Michal Svoboda
