rsync without password prompt

Hi,

I am tranfering the files from local machine to remote machine using rsync utility but it is prompting password. but i don't want to provide through prompt. how can i give in my shell script.

can anyone suggest me.Thanks in advance

rsync -rvcpogtl -e "ssh $LOCAL_PORT" $SOURCE_DIR $DESTINATION_PATH # > Remote_Copy_repository.log

You want to use public keys. The following page discusses the use of keys with rsync:

ryanvarick.com - Backup with rsync