Man Pages in grub2-common

Section 8: System administration commands

grub-install.8

Install grub to a device

grub-reboot.8

Set the default boot entry for grub, for the next boot only

grub-set-default.8

Set the saved default boot entry for grub

update-grub.8

Stub for grub-mkconfig

update-grub2.8

Stub for grub-mkconfig