Author: Eric Olsen - eric@ericolsen.net
Command Line Options
rsyncbackup.sh --destination-dir | -d "destination directory"
--file-list | -f "files from list"
--source-name | -s "backup source name | remote hostname"
--rshell | -r "use ssh"
--ssh-user | -U "[ssh username (default rsync-backup)]"
--ssh-port | -P "[ssh port (default 22)]"