SSH Login without password

In order to log from host A onto host B without a password, you need to add the RSA key from host A into the trusted key list of host B. In order to do that, follow theses steps:

1. Create RSA Key as a user. Don't enter any passphrase. The generated public key will be stored in HOME/.ssh/id_rsa.pub

   ssh-keygen -t rsa

2. Create on host B .ssh folder

   mkdir ~/.ssh

3. Export RSA public key to host B with this command on host A

   cat .ssh/id_rsa.pub | ssh b@B 'cat >> .ssh/authorized_keys'

4. Be sure that the permission are 700. You can this command to set permission

   chmod -R 700 ~/.ssh