echo "set terminal pdfcairo solid color enhanced; " \
"set output \"graph$i.pdf\";" \
"set pointsize 0.5;" \
"$(< plot.gp)" | gnuplot
echo 'set terminal pngcairo color enhanced size 750,525 font ",10" ;' \
"$(< plot.gp)" | gnuplot > graph$i.png
echo "set terminal pdfcairo solid color enhanced; " \
"set output \"graph$i.pdf\";" \
"set pointsize 0.5;" \
"$(< plot.gp)" | gnuplot
echo 'set terminal pngcairo color enhanced size 750,525 font ",10" ;' \
"$(< plot.gp)" | gnuplot > graph$i.png