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Re: tar incremental backups and ctimeâ problem

On 23/05/2016 10:54, x y wrote:
Hi Marco,

Thanks for your reply. The problem is that there are a lot of files to
be checked so replacing ctime by time to support tar incremental
backup should be more practical.

Bottom post on this mailing list, please.

It is not clear to me your expectation:
- are you asking how to use ctime to select the file with tar alone ?
  It is not possible for my understanding of the manual.

- Are you asking the package maintainer to change the behaviour of
  cygwin tar ? Unlikely to happen, but I leave to him.


On Mon, May 23, 2016 at 11:46 AM, Marco Atzeri <> wrote:
On 23/05/2016 10:40, x y wrote:


The MS Office applications are changing the ctime value of .doc and
.xls files even if they are not modified. Opening and closing an
office file without modifying the content is changing ctime and the
unmodified document is included in the incremental tar archive. Could
it be possible to use the mtime value instead of ctime to avoid the
the reappearance of the unchanged files in the incremental archive?

Test OS  : Windows 7 Sp1

find -ctime should be able you to build the list of files
that are changed and that tar should process


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