#---
# Excerpted from "Programming Ruby 3.2",
# published by The Pragmatic Bookshelf.
# Copyrights apply to this code. It may not be used to create training material,
# courses, books, articles, and the like. Contact us if you are in doubt.
# We make no guarantees that this code is fit for any purpose.
# Visit https://pragprog.com/titles/ruby6 for more book information.
#---
puts "In parent, term = #{ENV['TERM']}"
fork do
  puts "Start of child 1, term = #{ENV['TERM']}"
  ENV['TERM'] = "ansi"
  fork do
    puts "Start of child 2, term = #{ENV['TERM']}"
  end
  
  Process.wait
  puts "End of child 1, term = #{ENV['TERM']}"
end
Process.wait
puts "Back in parent, term = #{ENV['TERM']}"
