>>>>> On Mon, 30 Mar 2009, ABCD  wrote:

> Personally, I would use

>     find "${D}" -type f \! -newermt "@${stamp1}" -exec \
>         touch -c -d "@${stamp1}" {} +

> and

>     find "${D}" -type f -newermt "@${stamp2}" -exec \
>         touch -c -d "@${stamp2}" {} +

> to avoid an unneeded call to xargs.

Right. And it can be done in one command:

   find "${D}" -type f \
     \( \! -newermt "@${stamp1}" -exec touch -c -d "@${stamp1}" {} + \
        -o -newermt "@${stamp2}" -exec touch -c -d "@${stamp2}" {} + \)

Ulrich