I have created the keys and placed the public key in the remote user directory (not the server root).
(remote machine: dwebapp1)
ex: /home/webarch/user_name/.ssh/authorized_keys2

cannot ssh into the remote machine using the following command:
ssh ${dwebapp1}

the manned description gives the following pattern:
[options] host [command]
(one of the options is this
Options:
-l user Log in using this user name.

But this is not working form me.
I just want to connect from one machine to the other without keying in the user name and password. Please help. The tutorial seems straight forward but I am having trouble. I am using the following tutorial link:

No Passwd Required - Mt Xia: Technical Consulting Group

Thank you for any help you can provide