Backup filesystem using dumpfs (FreeBSD)

finally i got to backup filesystem using dumpfs

- i got script from this web http://my.galagzee.com/2009/07/17/freebsd-dump-filesystem-shell-script/
- touch a new file name "dumpfs.sh" and put at /usr/local/sbin/
- paste the script inside dumpfs.sh
- set at /etc/crontab

to restore from backup dumps
- restore rf 20100305_0


reference :
- http://my.galagzee.com/2009/07/17/freebsd-dump-filesystem-shell-script/