Any way to tell whether a website is RoR?

Rails
1

Since it is supposed to be transparent, is there a way to tell whether a
website I am visiting is using RoR to serve its content?

I just got the HTTP header from my localhost Rails app…
and it is nothing special:

HTTP/1.1 200 OK
Connection: close
Date: Mon, 17 Sep 2007 11:40:19 GMT
ETag: “46e225dd-1d80-0”
Last-Modified: Sat, 08 Sep 2007 04:32:29 GMT
Content-Type: text/html
Content-Length: 7552

2

kinda childish but you’ll be surprised how much it works - in the folder
public/images there is a rails.png picture that comes with the app (the
second you create it). no one really seems to delete this useless
picture, and if you try and search for it in the url and it comes up, it
is probably (hmmm…yea, almost a sure thing) that it is a rails app.
but it aint a god-given truth.

try adding a “/images/rails.png” to the domain name and see if you get
the pic or no. it’s nothing certain, but i’m not sure if there is a
certain way. anyway. ex -

http://ifeel.co.il/images/rails.png