Re: Should -et be available?

[Chris F.A. Johnson]

On Sun, 24 May 2020, Peng Yu wrote:

> I don't find a way to test whether two files are at the same time.
> Should there be a switch for this comparison given -nt and -ot are
> available? Thanks.
>
>       file1 -nt file2
>              True if file1 is newer (according to modification date)
> than file2, or if file1 exists and file2 does not.
>       file1 -ot file2
>              True if file1 is older than file2, or if file2 exists
> and file1 does not.

 Use both tests. If it is neither older nor newer, then it is the same.

--
   Chris F.A. Johnson                         <http://cfajohnson.com/>
   =========================== Author: ===============================
   Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)
   Pro Bash Programming: Scripting the GNU/Linux shell (2009, Apress)