pathname

pathname.rb

require 'pathname'
path = Pathname.new('.') # current directory
path += 'tests'          # ./tests
path += 'functional'     # ./tests/functional
path = path.parent       # ./tests
path += 'config.yaml'     # ./tests/config.yaml
path.read                # contents of ./tests/config.yaml
path.open('w'){|io| io << "env: test"}
path.read                # "env: test"
path.children{|p| puts p.inspect} # prints all the files/directories in ./tests