ipsw=$(find . -name "*.ipsw")
for f in $ipsw;do
    unzip -o $f "kernelcache.*" -d $f.d
done

kernels=$(find . -name "kernelcache.*" -not -name "*.dec")
for k in $kernels;do
    offset=$(LANG=C grep -obUaP "\xff\xcf\xfa\xed" $k | head -n1 | cut -d':' -f1)
    ./lzssdec -o $offset < $k > $k.dec
    echo $offset
    name=$(strings $k.dec | grep "Darwin Kernel Version" | egrep -o 'xnu-\S+')
    echo $name
    if [ ! -d "$(dirname $name)" ]; then
        mkdir $(dirname $name)
    fi
    mv $k.dec $name
    rm $k
done