How to plot at terminal using GNUPlot

Gnuplot is an awesome graph plotting program that has been around since the time of dot-matrix printers and teletype terminals. Little wonder that it has support for such archaic output devices even today. One such output terminal supported by Gnuplot is called the dumb terminal.

To switch to a dumb terminal:

gnuplot> set terminal dumb

Reference: Page 220 from the book Gnuplot in Action