SYNOPSIS
       grub-set-default [OPTION] entry

DESCRIPTION
       Set the default boot entry for GRUB.

       -h, --help
              print this message and exit

       -v, --version
              print the version information and exit

       --root-directory=DIR
              expect  GRUB  images under the directory DIR instead of the root
              directory

       ENTRY is a number or a menu item title.

REPORTING BUGS
       Report bugs to <bug-grub@gnu.org>.