[Unix] The fastest way to log into another machine using ssh

Writing passwords every time you log into another Unix machine using ssh disturbs you?
It could be much simpler:

[[email protected]:~]$ ssh another-machine
Things will be bright in P.M.  A cop will shine a light in your face.
[email protected]:~$

1. Add to /etc/hosts (as root): another-machine

2. Add to ~/.ssh/config (as user):

Host another-machine
User codesmuggler

3. Generate keys (as user):

ssh-keygen -t rsa

4. Copy id_rsa.pub (public key – very important!) to another-machine.
5. Add public key to authorized_keys:

cat id_rsa.pub >> ~/.ssh/authorized_keys
rm id_rsa.pub

Its everything! You can log into another-machine using ssh without need of telling password and using only two words:

ssh another-machine
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