How can i setup ssh password-less login for particular user

HI Community.

i was trying to create ssh password less authentication for one user called "night" and it's not working for me.

this is the steps i followd.

i have loged into the server and issued

ssh-ketgen -t rsa

bash-3.2$ ssh-keygen -t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/log/.ssh/id_rsa):

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /log/.ssh/id_rsa.

Your public key has been saved in /log/.ssh/id_rsa.pub.

The key fingerprint is:

fa:b8:21:8e:67:c1:d1:9b:ed:88:9d:c9:fd:2a:ef:f1 night@test