Extlinux config file maker for Fedora 17

update-extlinux-cfg.sh

#!/usr/bin/sh
# vim: sts=4 sw=4
#
# Extlinux config file maker for Fedora 17
#
# Install instruction: (do this by root)
#   # yum install extlinux
#   # extlinux --install /boot/extlinux
#   # sh <THIS SCRIPT> > /boot/extlinux/extlinux.conf
#
# Do not remove grub2 because we need some utils by grub2

CFG=/etc/default/grub
tmp=`lsb_release -sd`
NAME=`echo $tmp | sed -e 'y/"/ /'`

if [ ! -f $CFG ]; then
    echo "$CFG can not be found"
    exit 1
fi

source $CFG

ROOTDEV=`grub2-probe -t device /boot`
ROOT=UUID=`grub2-probe -t fs_uuid -d $ROOTDEV`

echo "DEFAULT vesamenu.c32"
echo "PROMPT 0"
echo

FIRST=1
for KERNEL in `ls -1rv /boot/vmlinuz*`; do
    RELEASE=`echo $KERNEL | sed -e 's/^.*vmlinuz-//'`
    echo "LABEL $NAME $RELEASE"
    if [ x$FIRST != x ]; then
        echo "  MENU DEFAULT"
        unset FIRST
    fi
    echo "  INITRD /boot/initramfs-$RELEASE.img"
    echo "  KERNEL $KERNEL"
    echo "  APPEND root=$ROOT $GRUB_CMDLINE_LINUX"
    echo 
done

cat << __EOF__
LABEL Memtest
    MENU LABEL Memtest86+
    KERNEL  /boot/memtest86+-4.20

LABEL HDT
    MENU LABEL Hardware Detection Tool
    KERNEL /boot/extlinux/hdt.c32

LABEL Grub2
    MENU LABEL Chain load Grub2
    KERNEL /boot/grub2/i386-pc/core.img
__EOF__