[Shotwell] How to remove metadata from photo files?

[Colin Law]

On 17 October 2011 13:21, Thomas Jost <schnouki at schnouki.net> wrote:
> Hi list,
>
> I've been using Shotwell for several months now and I really like it.
> Lightweight and efficient -- just what I like on my computers running
> Arch Linux.
>
> When I switched to Shotwell, I enabled the option to write tags and
> other metadata inside the photo files. Since then I realized that it's
> probably a bad idea when you want to do regular backups. (Right now I'm
> using unison to backup and sync the DB and pictures on several
> computers, but I'd like to switch to a real VCS like git/git-annex or
> boar).
>
> So is there a (simple) way to remove these metadata while leaving the
> pictures intact? I'm perfectly fine with long command lines and
> shell/Python/Perl scripts, it's just that I don't know where to start
> and I'm a little lost with all these EXIF, IPTC and XMP things :)

I don't understand why you would want to remove the metadata.  What
harm is it doing?
Note that all digital pictures have such data for the date taken and so on.

Colin