Consider adding an `-exec` with find

[swcarpentry]

Consider adding an `-exec` with find

[wking]

On Mon, Apr 27, 2015 at 07:31:22PM -0700, bingo11 wrote:

Consider given an example of how to use -exec in conjunction with
find. Currently, it is suggested to use command expansion -- $()
-- to run a command on a file. As suggested by by @wking in
#132, it is simpler
and much more idiomatic, to use -exec.

While I think this is all true, my preferred solution (mentioned in
#132) is to drop the ‘grep FE $(find …)’ call. Folks already have
enough on their plate without learning more of find's pre-getopt-long
syntax ;).

[gvwilson]

I'm -1 to `-exec` in our basic lessons (but +1 in the shell-extras): the `{} ;` syntax is nasty.

[gdevenyi]

I'm with @gvwilson this should either go in shell-intermediate or shell-extras, it's well outside the scope of novice material.