Lightweight xml utility to pluck elements

jq is an awesome utility for parsing and transforming json via the command line. I wanted something similar for xml. The following is a short ruby script which does a tiny tiny (did I say tiny?) bit of what jq does for xml. Hope you find it useful.

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#!/usr/bin/env ruby
# Author: Khaja Minhajuddin
require 'nokogiri'
require 'parallel'
require 'etc'
if ARGV.count < 2
puts <<-EOS
Usage:
xml_pluck xpath file1.xml file2.xml
e.g.
xml_pluck "//children/name/text()" <(echo '<?xml version="1.0"?><children><name>Zainab</name><name>Mujju</name></children>')
# prints
Zainab
Mujju
EOS
exit -1
end
xpath = ARGV.shift
Parallel.each(ARGV, in_processes: Etc.nprocessors) do |file|
doc = Nokogiri::XML(File.read(file))
puts doc.xpath(xpath)
end

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