/usr/share/doc/ruby-eventmachine/examples/ is in ruby-eventmachine 1.0.7-3build3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/ruby-eventmachine/examples/guides/
/usr/share/doc/ruby-eventmachine/examples/guides/getting_started/
/usr/share/doc/ruby-eventmachine/examples/guides/getting_started/01_eventmachine_echo_server.rb
/usr/share/doc/ruby-eventmachine/examples/guides/getting_started/02_eventmachine_echo_server_that_recognizes_exit_command.rb
/usr/share/doc/ruby-eventmachine/examples/guides/getting_started/03_simple_chat_server.rb
/usr/share/doc/ruby-eventmachine/examples/guides/getting_started/04_simple_chat_server_step_one.rb
/usr/share/doc/ruby-eventmachine/examples/guides/getting_started/05_simple_chat_server_step_two.rb
/usr/share/doc/ruby-eventmachine/examples/guides/getting_started/06_simple_chat_server_step_three.rb
/usr/share/doc/ruby-eventmachine/examples/guides/getting_started/07_simple_chat_server_step_four.rb
/usr/share/doc/ruby-eventmachine/examples/guides/getting_started/08_simple_chat_server_step_five.rb
/usr/share/doc/ruby-eventmachine/examples/old/
/usr/share/doc/ruby-eventmachine/examples/old/ex_channel.rb
/usr/share/doc/ruby-eventmachine/examples/old/ex_queue.rb
/usr/share/doc/ruby-eventmachine/examples/old/ex_tick_loop_array.rb
/usr/share/doc/ruby-eventmachine/examples/old/ex_tick_loop_counter.rb
/usr/share/doc/ruby-eventmachine/examples/old/helper.rb