ok here is the intented output . .
[root@cl-t039-400cl BackupPC]# /etc/init.d/backuppc restart
Shutting down BackupPC: [ OK ]
Starting BackupPC: [ OK ]
[root@cl-t039-400cl BackupPC]# su - backuppc
[backuppc@cl-t039-400cl ~]$ /usr/bin/ssh -q -x -l backuppc
67.205.74.115 sudo /usr/bin/rsync --server --sender --numeric-ids --perms --owner --group -D --links --hard-links --times --block-size=2048 --recursive --ignore-times . /etc/
sudo: sorry, you must have a tty to run sudo
[backuppc@cl-t039-400cl ~]$
This is may be error !
sudo: sorry, you must have a tty to run sudo