a ruby implement of webify(https://github.com/beefsack/webify)

webrick-webify.rb

require 'webrick'
require 'open3'
server = WEBrick::HTTPServer.new :Port => 8000
server.mount_proc('/') { |req, res| res.body = Open3.capture2(ARGV[0], :stdin_data=>req.body)[0] }
trap('INT') { server.shutdown }
server.start

# server:
# ruby webify-webrick.rb "wc -c"

# client:
# curl -d 'This is a really long sentence' http://localhost:8000