[vdr] Re: GRUB and nvram-wakeup

[Eckard Brauer <e.brauer@intershop.de>]

"Thomas Erdmann" <vdr@igt-gmbh.de> schrieb(en)/wrote:

> The GRUB doesn't have an option '-R' to reboot with a choosen boot
> menu entry.
> Has anyone used GRUB for this or any hint to give a shell command like
> "grub xyz" to reboot with a special image ?

How about managing that with having a script modify the entry "default
<num>" in /boot/grub/grub.conf? Not tested, only an idea:

--- snip! [chboot.sh] ---
#!/bin/sh
#
# change default boot entry in /boot/grub/grub.conf
#

CONF=/boot/grub/grub.conf
TMP=/tmp/grub.conf.$$

if [ $# -ne 1 ]; then
	echo "`basename $0` <num>" >&2
	exit
fi

ENTRY=$1 awk '/^default/{print "default", ENVIRON["ENTRY"]; next}//' \
	"$CONF" > "$TMP"
cp "$TMP" "$CONF"
rm "$TMP"

--- snap! ---

Eckard


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