#!/bin/sh start="1.0" end="1.0e+32" frames="100" magn=`python -c "from math import pow; fac = pow($end / $start, 1.0 / ($frames - 1)); print \"\\n\".join([ str($start * pow(fac, i-1)) for i in range(1, $frames + 1)])"` centerx="-0.743643887037158704752191506114774" centery="0.131825904205311970493132056385139" i=0 for mag in $magn; do echo $mag fname=`printf "out_%04d_%s.ppm" $i $mag` ./a.out 320 240 $centerx $centery $mag > "$fname" i=$((i+1)) done