how show message in text file on web page?

Hello, i want to read text file and then want to show message in text file on web page.pls, introduce me how i can do. now i cant read file but i don't know how write script on rhtml for show the massage in text file.

this is code in controller def show    f = File.open("/...../test.txt,"r")      while (line = f.gets)      end    f.close() end pls, help me what next step i do? thank you