Provided by: grub2-common_2.02-2ubuntu8_amd64
grub-reboot - set the default boot entry for GRUB, for the next boot only
grub-reboot [OPTION] MENU_ENTRY
Set the default boot menu entry for GRUB, for the next boot only. -h, --help print this message and exit -V, --version print the version information and exit --boot-directory=DIR expect GRUB images under the directory DIR/grub instead of the /boot/grub directory MENU_ENTRY is a number, a menu item title or a menu item identifier. Please note that menu items in submenus or sub-submenus require specifying the submenu components and then the menu item component. The titles should be separated using the greater-than character (>) with no extra spaces. Depending on your shell some characters including > may need escaping. More information about this is available in the GRUB Manual in the section about the 'default' command.
Report bugs to <email@example.com>.
grub-set-default(8), grub-editenv(1) The full documentation for grub-reboot is maintained as a Texinfo manual. If the info and grub-reboot programs are properly installed at your site, the command info grub-reboot should give you access to the complete manual.