centos man page for grub2-reboot

GRUB-REBOOT(3)						     Library Functions Manual						    GRUB-REBOOT(3)

NAME
       grub-reboot -- Set the default boot menu entry for the next boot only.

SYNOPSIS
       grub-reboot [--boot-directory=DIR] MENU_ENTRY

DESCRIPTION
       grub-reboot sets the default boot menu entry for the next boot, but not further boots after that.  This command only works for GRUB config-
       uration files created with GRUB_DEFAULT=saved in /etc/default/grub.

OPTIONS
       --boot-directory=DIR
	      Find GRUB images under DIR/grub.	The default value is /boot, resulting in grub images being search for at /boot/grub.

       MENU_ENTRY
	      A number, a menu item title or a menu item identifier.

SEE ALSO
       info grub

								  Wed Feb 26 2014						    GRUB-REBOOT(3)