sshパスワードなし認証接続設定

@client

$ mkdir ~/.ssh
$ chmod 700 ~/.ssh
$ ssh-keygen -t dsa
$ scp ~/.ssh/id_dsa.pub pericles@server:~/

@server

$ mkdir ~/.ssh
$ cat ~/id_dsa.pub >> ~/.ssh/authorized_keys
$ rm ~/id_dsa.pub
$ chmod 700 ~/.ssh
$ chmod 600 ~/.ssh/authorized_keys

sshパスワードなし認証で、毎回 passphrase 入力を求められる場合、以下を実行。

$ ssh-add

下記エラーが出る場合、
Could not open a connection to your authentication agent

$ eval `ssh-agent`
$ ssh-add /home/pericles/.ssh/id_dsa