Thanks, if I understand correctly this sets the default boot kernel from a
Linux one to the DOS one for the next boot ONLY and then it reverts to the
original default kernel ?
Denis Croombs
www.just-servers.co.uk
www.just-hosting.net
----- Original Message -----
From: "John Haxby" <jch@xxxxxxxxxxxxxxxxxx>
To: <shrike-list@xxxxxxxxxx>
Sent: Wednesday, June 11, 2003 10:47 AM
Subject: Re: Booting to Redhat & dos using grub
> Denis Croombs wrote:
>
> >I am trying to set-up a system to boot at certain times to either DOS or
> >Linux I can set the default boot to Linux so when I ask the DOS to boot
it
> >will boot to Linux, but how do I tell Linux to boot to dos from the Linux
> >command ?
> >
> >
>
> I wrote the attached shell script for this. There's a not
> terribly-well-documented "--once" option to savedefault. Note that
> I've commented out the "exec reboot" in this version of the script, you
> don't want to know why :-)
>
----------------------------------------------------------------------------
----
> #!/bin/bash
>
> if [ $(id -u) -ne 0 ]; then
> echo "${0##*/}: must be superuser" >&2
> exit 1
> fi
>
> IFS="
> "
> set $(awk '$1 == "title" {sub(/^title[ ]*/, ""); print $0;}'
/boot/grub/grub.conf)
>
> PS3="boot? "
> select boot
> do
> if [ -n "$boot" ]
> then number=$((REPLY-1))
> echo "savedefault --default=$number --once" |
grub --no-curses --device-map=/boot/grub/device.map >/dev/null
> # exec reboot
> fi
> break
> done
>
