grub-mkconfig

Generate a GRUB configuration file. More information: https://www.gnu.org/software/grub/manual/grub/html_node/Invoking-grub_002dmkconfig.html.

Do a dry run and print the configuration to stdout:

sudo grub-mkconfig

Generate the configuration file:

sudo grub-mkconfig --output={{/boot/grub/grub.cfg}}

Print the help page:

grub-mkconfig --help