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