gaming

gaming.sh

# Usage: ./gaming.sh target.png

filename=$(basename -- "$1")
extension="${filename##*.}"
filename="${filename%.*}"

for i in 0 1 2 3 4; do
    convert $1 -modulate 100,100,$(((($i + 3) % 5) * 33)) $filename$i.png
done
convert -delay 3 -loop 0 $filename*.png $filename.gif;