grub2/90_persistent
2008-08-27 08:07:28 +00:00

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#! /bin/sh -e
# update-grub helper script.
# Copyright (C) 2008 Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
# The output of this script is copied from part of grub.cfg
# that correspond to itself. The achievement is that user can
# modify that part of grub.cfg directly, and it will be persistent
# across update-grub runs.
transform="s&^&&;s,grub,grub2,"
ME=$(echo $0 |sed 's,/,\\/,g')
GRUBCFG=/boot/`echo grub | sed ${transform}`/grub.cfg
# Exit gracefully if there's no configuration file yet
[ -f ${GRUBCFG} ] || exit 0
awk "
BEGIN {echo = 0}
/### BEGIN $ME ###/ {echo = 1; next}
/### END $ME ###/ {echo = 0; next}
{if (echo) print}
" ${GRUBCFG}