Example of using Curses to manage input/output text areas.

gistfile1.txt

require 'curses'

Curses.init_screen

output = Curses::Window.new(Curses.lines - 1, Curses.cols, 0, 0)
output.setpos(0,0)
input = Curses::Window.new(1, Curses.cols, Curses.lines - 1, 0)
input.setpos(0,0)

loop do
  output << input.getstr << "\n"
  output.refresh

  input.clear
end