Ruby, getting path from path+filename

Question

Programming language: Ruby 1.9

Problem String: C:/Test/blah.txt
to C:/Test/

I know it's an easy question, but Google and the Ruby quickref for File have no solution for me.
And I have no experience with Regex.

Answer 1

Use the Ruby File.dirname method.

File.dirname("C:/Test/blah.txt") # => "C:/Test"  

Answer 2

More versatile would be the Ruby Pathname class:

require 'pathname'  pn = Pathname.new("C:/Test/blah.txt") p pn.dirname.to_s + Pathname::SEPARATOR_LIST 

which gives C:/Test/.