redefine ` with redirect command on file

require 'Tempfile'



class Test
  
  
def `(s)

  output=""
  Tempfile.open("w") do |f|
    system "#{s} > #{f.path}"
    output=f.readlines.to_s
  end  
  
  output
  
end  
    
def shell(command)

  
end

end

Test.instance_eval do 
  p `ls /`
end