Two ways to fetch a file from a url using Ruby

fetch-file-url.rb

#!/usr/bin/env ruby

# usage: saveimages.rb <url>
# locally save a file

## uri option - problematic https://twin.github.io/improving-open-uri/
# require "open-uri"

# open("https://s3.amazonaws.com/com.twilio.prod.twilio-docs/images/test.original.jpg") do |image|
#   File.open("./test.jpg", "wb") do |file|
#     file.write(image.read)
#   end
# end

## down option - preferred
require "down"
require "fileutils"

tempfile = Down.download(
                "https://s3.amazonaws.com/com.twilio.prod.twilio-docs/images/test.original.jpg",
                max_redirects: 5
          )
FileUtils.mv(tempfile.path, "./nina.jpg")