grub ships ./sbin/update-grub and ./sbin/grub-install, while grub2-common ships ./usr/sbin/update-grub and ./usr/sbin/grub-install. The latter is also shipped by lupin-support
grub ships ./sbin/update-grub and ./sbin/ grub-install, while grub2-common ships ./usr/sbin/ update- grub and ./usr/sbin/ grub-install. The latter is also shipped by lupin-support