Convert all jpg images from folder into animated gif.

gifify.sh

#!/bin/sh
mogrify -verbose -resample 72x72 -resize 512x512 *.jpg
exiftran -a -no -i *.jpg
convert -verbose -delay 15 -loop 0 *.jpg fun.gif

Would be better starting by theses line, isn't it ?

read -p "This script will resize all images in this folder, you will lose all of them, are you sure to continue ? (y/n) " choice
case "$choice" in 
  y|Y ) echo "Creation of your gif =)";;
  * ) echo "Exiting the script, be careful :) ."; exit 1;;
esac