writting string to file

download.rb

# downloading content from the web

require 'open-uri'
url = 'http://blog.stackoverflow.com/audio/stackoverflow-podcast-001.mp3'
open(url).read.to_file(url.split('/').last)

# And boom, you’ve downloaded the file to “stackoverflow-podcast-001.mp3”

to_file.rb

class String
  def to_file(filename)
    File.open(filename, 'w') {|f| f.write self }
  end
end

"Hello file!".to_file("hello.txt")