page

#!/usr/bin/env ruby

require 'io/console'

thread = Thread.new do
  $stdin.each_line do |line|
    print "stdin: #{line}\r"
  end
end

IO.console.raw do |io|
  loop do
    char = io.getc
    puts "tty: #{char}\r"
    break if char == "q"
  end
end

puts "Done!\r"

exit

To test it:

while true; do echo yep; sleep 1; done | page