[root@rsync-server-1 /]# echo 'rsync_backup:redhat' > /etc/rsync.password
[root@rsync-server-1 /]# chmod 600 /etc/rsync.password
[root@rsync-server-1 /]# cat /etc/rsync.password rsync_backup:redhat
[root@rsync-server-1 /]# ll /etc/rsync.password
-rw-------. 1 root root 20 Jun 4 04:27 /etc/rsync.password