#!/bin/bash

if [ $# -lt 3 ] ; then
    printf "not enough arguments given\n\
usage: gifpress input.gif width height\n"
    exit 1
fi

if ! command -v gifsicle &> /dev/null ; then
    echo "gifpress not installed!"
    exit 1
fi

filename=$(echo "${1}" | awk -F. '{ print $1 }')
gifsicle "$1" --resize "$2x$3" > "${filename}_resized.gif"