LinuxQuestions.org - Script to backup system files

I'm looking at backing up configuration and other various files off my NetBSD box to my fileserver.

I've made an attempt to write up a script to do all this for me. I'm not at home at the moment, or infront of a BSD box, so I've just tried remembering commands and file paths from memory.

I'd appreciate some input on the following:

What other files would I need to backup incase my hardware died and needed to rebuild from scratch (As quickly as possible).
Am I using find correctly to locate the oldest file in the directory and remove it?

Code:

# OS: NetBSD 3.0.1

# 

# Author: Kristijan

#

# Change Log:

#        26/09/06  - Initial write of script





##Variables##



USERNAME=kristijan

SERVERNAME=bart

BACKUP=${USERNAME}@${SERVERNAME}:backup

LOCALBACKUP=/tmp/backup

DATE=`date +%b%Y`

HOSTNAME=`hostname`





##Create /tmp/backup##

mkdir $LOCALBACKUP





##Copy files locally to be backed up##



pkg_info > $LOCALBACKUP/pkg_info.txt

ifconfig -a > $LOCALBACKUP/ifconfig.txt

crontab -u root -l > $LOCALBACKUP/root_crontab.txt

cp /etc/ssh/sshd_config $LOCALBACKUP

cp /etc/lkm.conf $LOCALBACKUP

cp /etc/rc.conf $LOCALBACKUP

cp /etc/pf.conf $LOCALBACKUP

cp /etc/dhcpd.conf $LOCALBACKUP

cp /etc/rc.d/rc.local $LOCALBACKUP

cp -r /root/scripts/* $LOCALBACKUP





##Remove backups which are older then 4 weeks##



ssh ${USERNAME}@${SERVERNAME} "find /home/kristijan/backup -iname *.tar.gz -mtime +28 -exec rm {}\;"





##Create package, send then remove##



tar -cvzf /tmp/${HOSTNAME}.${DATE}.tar.gz $LOCALBACKUP

scp /tmp/${HOSTNAME}.${DATE}.tar.gz $BACKUP

rm /tmp/${HOSTNAME}.${DATE}.tar.gz

rm -rf $LOCALBACKUP

Cheers,
-Kristijan