How to find a file's mailcap "content type"?

[Colin Watson]

On Mon, Oct 28, 2019 at 09:55:59PM +0000, Chris Green wrote:
> How can one find what mailcap "content type" corresponds to a file's
> actual format?

  file --brief --mime-type FILE-NAME

-- 
Colin Watson                                       [cjwatson at ubuntu.com]