The Shape of Everything
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May 31, 2017

I was looking for a specific Acorn image, which I couldn't remember the filename of but I did remember the folder it was in as well as the text in it ("fx"). And then I also remembered that text boxes in Acorn files are indexed via Spotlight, and since I was already in Terminal I ran the following command in that folder:

$ mdfind -onlyin . fx

And tada, there were the images I was looking for.

Doing this in Terminal is not necessary, I could have also easily done this via the Spotlight menu.