Converts the successive outputs of a program into a splendid animated gif

outputToGif.sh

#!/bin/bash
start=$1
end=$2
command=$3
outputfile=$4
delay=10

rm -rf /tmp/outputToGif 2>/dev/null
mkdir -p /tmp/outputToGif

for i in $(seq $start $end); do
    echo $i/$end
    $command $i | convert -background white -fill black -font courier label:@- /tmp/outputToGif/tmp$(printf "%08d\n" $i).gif
done
convert -layers Optimize -delay $delay -loop 0 /tmp/outputToGif/tmp*.gif $outputfile
rm -rf /tmp/outputToGif 2>/dev/null