Hi Silvio,
> How can I do the same in the other folders and all those that exist
> with the same date are hidden and when no file is present give out the
> file which is missing in other folders sort by date. The name of file
> is sure other, but the date is ever the same.
The requirement is unclear. Given this input,
$ grep ^ */*
de/1.md:date: 2019-10-10
de/2.md:date: 2019-10-12
de/3.md:date: 2019-10-14
de/4.md:date: 2019-10-16
en/1.md:date: 2019-10-10
en/2.md:date: 2019-10-12
en/3.md:date: 2019-10-14
en/4.md:date: 2019-10-16
fr/4.md:date: 2019-10-16
ru/3.md:date: 2019-10-14
ru/4.md:date: 2019-10-16
$
what output do you require?
--
Cheers, Ralph.
