ruby command which extract text from xmlfile

xmltext.rb

#!/usr/bin/env ruby

# extract text node from xml file
# USAGE:
#   xmltext.rb file_path xpath

require "rexml/document"

file = ARGV.shift.dup
xpath = ARGV.shift.dup

doc = nil
File.open(file){ |fp| doc = REXML::Document.new fp }

puts doc.root.elements[xpath].text