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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 $NEW
fi
# Otherwise, we leave the .new copy for the admin to consider...
}
BACKUP_FILE=(inittab rc.conf logrotate.d/openrc)
BACKUP_CONF=(bootmisc consolefont devfs dmesg fsck hostname hwclock keymaps killprocs localmount modules mtab net-online netmount network staticroute tmpfiles urandom)
for file in "${BACKUP_FILE[@]}"; do
config "etc/${file}.new"
done
for file in "${BACKUP_CONF[@]}"; do
config "etc/conf.d/${file}.new"
done
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