How to mass rename files in ruby

Question

I have been trying to work out a file rename program based on ruby, as a programming exercise for myself (I am aware of rename under linux, but I want to learn Ruby, and rename

Answer 1

Here's a short version I've used today (without pattern matching)

Save this as rename.rb file and run it inside the command prompt with ruby rename.rb

count = 1
newname = "car"
Dir["/path/to/folder/*"].each do |old|
  File.rename(old, newname + count.to_s)
  count += 1
end

I had /Copy of _MG_2435.JPG converted into car1, car2, ...