regenerating /var/db/pkg

[Eitan Adler]

>
> Just asking opinions, if people want this, I'll make a patch and
> file a PR.
>

Is this script correct?

#!/bin/sh
#
# $FreeBSD: src/etc/periodic/daily/210.backup-aliases,v 1.6.36.1.2.1
2009/10/25 01:10:29 kensmith Exp $
#

# If there is a global system configuration file, suck it in.
#
if [ -r /etc/defaults/periodic.conf ]
then
    . /etc/defaults/periodic.conf
    source_periodic_confs
fi

bak=/var/backups
db_loc="/var/db/pkg";
bk_loc="/$bak/pkgdb.bak.tar"

case "$daily_backup_pkgdb_enable" in
    [Yy][Ee][Ss])
	if [ ! -d $db_loc ]
	then
	    echo '$daily_backup_pkgdb_enable is enabled but' \
		"$db_loc doesn't exist"
	    rc=2
	else
	    rc=0

	    echo ""
	    echo "Backing up mail aliases:"

	    if [ ! -f $bk_loc ]
	    then
		echo "no $bk_loc"
		tar -cjf $bk_loc $db_loc || rc=3
	    fi
	fi;;

    *)  rc=0;;
esac

exit $rc