Find a file with an unknown name

[Roy Hubbard]

Steve Bertrand wrote:
> I want to find a file that was recently created.
>
> The content within the file is known, so I can grep for that. The
> directory structure that contains the file is also known. The filename
> is not known.
>
> What command string do I use to search a directory structure for a file,
> when my search pattern only matches content and not filename?
>
> Steve
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>   
Maybe this will work.

 From the top of the directory structure:

grep -R {expression} .