Ruby: How to calculate a path relative to another one?

Question

Let\'s say I know the absolute path that I am starting from and the absolute path that I am trying to get to:

first = \'/first/path\'
second = \'/second/path\'
<         


        

Answer 1

Use Pathname#relative_path_from:

require 'pathname'

first = Pathname.new '/first/path'
second = Pathname.new '/second/path'

relative = second.relative_path_from first
# ../../second/path

first + relative
# /second/path