On Thu, Dec 10, 2020 at 12:00:20PM +0200, Andrei POPESCU wrote: [...]
> 2. As far as I recall grub1 has a 'grub set-default' or similar command
> that could be used for to change the default for the next boot only[b].
> Maybe this was re-implemented also in grub2?
It seems so (note version 2.02+... at man page's footer). Since it's
short and sweet, I take the liberty to include its man page here, as
a special broadcast service :-)
========================================================================
GRUB-SET-DEFAULT(8) System Administration Utilities GRUB-SET-DEFAULT(8)
NAME
grub-set-default - set the saved default boot entry for GRUB
SYNOPSIS
grub-set-default [OPTION] MENU_ENTRY
DESCRIPTION
Set the default boot menu entry for GRUB. This requires setting
GRUB_DEFAULT=saved in /etc/default/grub.
-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.
REPORTING BUGS
Report bugs to <bug-g...@gnu.org>.
SEE ALSO
grub-reboot(8), grub-editenv(1)
The full documentation for grub-set-default is maintained as a Texinfo
manual. If the info and grub-set-default programs are properly installed
at your site, the command
info grub-set-default
should give you access to the complete manual.
grub-set-default (GRUB) 2.02+dfsg1-20+deb10u2 July 2020 GRUB-SET-DEFAULT(8)
========================================================================
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