ssh_authorized_keys

ricardo@local:~$ scp ~/.ssh/id_rsa.pub user@host:~/.ssh/authorized_keys
ricardo@local:~$ ssh user@host
user@host:~$ chmod 600 .ssh/authorized_keys

ssh_config

host site1
  user username_gigante
  hostname sub.dominiosemnocao.com.br

host site2
  user username_maior_ainda
  hostname sistemax.empresay.com.br

ssh_keygen

ricardo@local:~$ ssh-keygen -t rsa
# Generating public/private rsa key pair.
# Enter file in which to save the key (/home/ricardo/.ssh/id_rsa): [ENTER]
# Enter passphrase (empty for no passphrase): [ENTER]
# Enter same passphrase again: [ENTER]

ssh_keys_setup

$ cd ~
$ mkdir .ssh
$ chmod 700 .ssh/
$ touch .ssh/authorized_keys
$ chmod 600 .ssh/authorized_keys

using_ssh_alias

# Antes
ricardo@local:~$ ssh [email protected]

# Depois
ricardo@local:~$ ssh site1