Question

I would like to write some data to a file in Ruby. What is the best way to do that?

Answer 1

File.open('a_file', 'w') do |f|     f.write 'some data' end 

You can also use f << 'some data' or f.puts 'some data' according to personal taste/necessity to have newlines. Change the 'w' to 'a' if you want to append to the file instead of truncating with each open.