GNUPLOT supports many different graphics devices. Use the set terminal command to select the type of device for which GNUPLOT will produce output.
Syntax:
set terminal {<terminal-type>}
show terminal
If <terminal-type> is omitted, GNUPLOT will list the available terminal types. <terminal-type> may be abbreviated.
Use set output to redirect this output to a file or device.
Several terminals have additional options. For example, see dumb,
iris4d, hpljii or postscript.