[cheald]

Or, you can write it from within Ruby:

    open("out.json", "w") {|f| f.puts JSON.dump(showings) }

[tom-lord]

    f << JSON.dump(showings)

avoids adding any new lines (not that it really matters in the case of JSON)

[cheald]

Doh, yes. `print` rather than `puts` is also acceptable.