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config() {
NEW="$1"
OLD="$(dirname $NEW)/$(basename $NEW .new)"
# If there's no config file by that name, mv it over:
if [ ! -r $OLD ]; then
mv $NEW $OLD
elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then
# toss the redundant copy
rm $NEW
fi
# Otherwise, we leave the .new copy for the admin to consider...
}
preserve_perms() {
NEW="$1"
OLD="$(dirname $NEW)/$(basename $NEW .new)"
if [ -e $OLD ]; then
cp -a $OLD ${NEW}.incoming
cat $NEW > ${NEW}.incoming
# Also preserve timestamp:
touch -r $NEW ${NEW}.incoming
mv ${NEW}.incoming $NEW
fi
config $NEW
}
# Process config files in etc/grub.d/:
for file in etc/grub.d/*.new ; do
preserve_perms $file
# Move it into place. These are not intended to be edited locally - make new custom scripts!
# We'll skip moving 40_custom.new, though.
if [ -r $file -a ! "$file" = "etc/grub.d/40_custom.new" ]; then
mv $file $(dirname $file)/$(basename $file .new)
fi
done
config etc/default/grub.new
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