title: Make GNUPLOT save a plot from shell
body: <p>Using a certain program (PersistenceLandscapes toolbox) I am generating a large number of scripts from which I generate plots with gnuplot. I iterate through the files and make gnuplot show the plot with the command <code>gnuplot gnuplotCommand.txt -p</code>. How can I make gnuplot save the plot in, say, PNG or (preferably) EPS format? (I want to avoid meddling with <code>gnuplotCommand</code>-type scripts.)</p>