GithubのSSH通信設定 ref: http://qiita.com/anthony1618/items/974c9c55d66a26515651

file0.txt

$ cd ~/.ssh/
$ ssh-keygen -t rsa -C "メールアドレス"
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/ユーザー名/.ssh/id_rsa): github_id_rsa
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in github_id_rsa.
Your public key has been saved in github_id_rsa.pub.
~以下略~

file1.txt

$ pbcopy < ~/.ssh/github_id_rsa.pub

file10.txt

Hi {account-name}! You've successfully authenticated, 
but GitHub does not provide shell access.

file11.txt

$ ssh -vT git@github.com

file2.txt

$ vi ~/.ssh/config

Host github.com
 HostName      github.com
 IdentityFile  ~/.ssh/github_id_rsa
 User          git

file3.txt

$ ssh -T git@github.com

file4.txt

Hi {account-name}! You've successfully authenticated,
but GitHub does not provide shell access.

file5.txt

Warning: Permanently added the RSA host key for IP address '204.232.175.90' to the list of known hosts.
Permission denied (publickey).

file6.txt

$ vi ~/.ssh/known_hosts

file7.txt

~~~~ ファイルの中身 ~~~~
github.com,204.232.175.90 ssh-rsa AAA... 

file8.txt

eval `ssh-agent`
$ ssh-add github_id_rsa(秘密鍵名)

file9.txt

$ ssh git@github.com