package_extract_file("system/bin/misledztweaks.sh", "/tmp/misledztweaks.sh");
set_perm(0, 0, 0777, "/tmp/misledztweaks.sh");
run_program("/tmp/misledztweaks.sh", "misledz");


# misledztweaks.sh

cd /
mount /system
cd system
cp build.prop bin/build.bak

setprop #Now setprop all your properties