#!/bin/sh 
# Dave's Unix Backup Script  DLN <dave@webaugur.com>

# Backup critical system files 
tar --create --ignore-failed-read --owner=root --group=root --gzip --file=/backup/critical.tgz --backup=numbered /etc* 

# Delete Backups older than 7 days
find /backup/critical* -type f -mtime +7 -exec rm -f -- {} \;