Determine file type in Ruby

Question

How does one reliably determine a file\'s type? File extension analysis is not acceptable. There must be a rubyesque tool similar to the UNIX file(1) comman

Answer 1

Pure Ruby solution using magic bytes and returning a symbol for the matching type:

https://github.com/SixArm/sixarm_ruby_magic_number_type

I wrote it, so if you have suggestions, let me know.