最终结果文件

.
├── authorized_keys
├── config
├── id_rsa.coding
├── id_rsa.coding.company
├── id_rsa.coding.company.pub
├── id_rsa.coding.pub
├── id_rsa.github
├── id_rsa.github.pub
└── known_hosts

新建不同的密钥和Host去匹配(@wazi)。

1、输入邮箱

ssh-keygen -t rsa -b 4096 -C "ytshang@gaoxiaobang.com"

2、保存位置，一般就在默认的目录下即可

Enter file in which to save the key (/Users/key/.ssh/id_rsa):
/Users/key/.ssh/id_rsa.coding.company

3、输入密码两次确认输入，当然密码是不可见的，直接输入完，回车确认即可：

Enter passphrase (empty for no passphrase):[输入密码]
Enter same passphrase again:[再次输入密码]

4、复制公钥：

pbcopy < ~/.ssh/id_rsa.coding.company.pub

把你需要单独的网站SSH公钥密钥，都用以上步骤都生成下。

这是我最终生成的文件（Coding公司、Coding个人、Github个人）：

添加到authorized_keys文件里面：

ssh-rsa AAAAB3NzaC1yc2EAAAADAQCAQCw******RQw== keystion@A.com
ssh-rsa AAAAB3NzaC1yc2EAAAADAQAB*******inUtQ== keystion@B.com
ssh-rsa AAAAB3Nz********ZCcvI1xZhBRWpZZdhv4Q== keystion@C.com

config文件

Host github.com
    HostName github.com
    IdentityFile ~/.ssh/id_rsa.github
    User git
Host git.coding.net
    HostName git.coding.net
    IdentityFile ~/.ssh/id_rsa.coding
    User git

Host company.git.coding.net
    HostName git.coding.net
    IdentityFile ~/.ssh/id_rsa.coding.company
    User git

测试是否连接成功

ssh -T git@github.com
Hi Keystion! You've successfully authenticated, but GitHub does not provide shell access.

ssh -T git@git.coding.net
Enter passphrase for key '/Users/key/.ssh/id_rsa.coding':
Hello keystion! You've connected to Coding.net via SSH successfully!

ssh -T git@company.git.coding.net
Hello key_kaikeba! You've connected to Coding.net via SSH successfully!

clone仓库时候多少有一点变化，pull、push等无变化。

git clone git@[Hose]:[UserName]/****.git

嗯，正文到这里结束。

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