Looks like `rc` to me.

On Tue, Jan 26, 2021 at 5:32 PM Dario Niedermann <dario@darioniedermann.it>
wrote:

> Il 24/01/2021 alle 06:44, Anthony Martin ha scritto:
>
> >% for(i in `{seq 0 2 8}) date -u 0x$i^0000000
>
> I give up... what interpreter is this?
>
> --
> Dario Niedermann   -:-   finger my email address for PGP key, etc.
>
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