如果你不使用推荐的HTTPS方法，可以使用SSH密钥建立安全连接您的计算机和GitHub。下面的步骤将引导您通过生成一个SSH密钥，然后添加到您的GitHub的帐户的公共密钥。
Step 1: Check for SSH keys
确认你本机的密钥,如果你有现有的密钥，则直接跳到step 4。
首先，我们需要检查您的计算机上现有的SSH密钥。打开终端并运行：
$ cd ~/.ssh #确认".ssh" 目录是否存在
If it says “No such file or directory” skip to step 3. Otherwise continue to step 2.
Step 2: 备份并移除存在的SSH keys
$ ls # Lists all the subdirectories in the current directory config id_rsa id_rsa.pub known_hosts $ mkdir key_backup # Makes a subdirectory called "key_backup" in the current directory cp id_rsa* key_backup # Copies the id_rsa keypair into key_backup rm id_rsa* # Deletes the id_rsa keypair
Step 3: Generate a new SSH key
要生成新的SSH密钥，输入下面的代码。修改默认值，要求输入一个文件，保存密钥，只需按Enter键。
$ ssh-keygen -t rsa -C "your_email@youremail.com" # Creates a new ssh key using the provided email Generating public/private rsa key pair. Enter file in which to save the key (/home/you/.ssh/id_rsa):
按回车保存到默认位置，再稍等出来提示输入密码短语，输完按回车要输两遍；它用来加密私钥，也就是以后使用私钥的时候要输这个密码；
Enter passphrase (empty for no passphrase): [Type a passphrase] Enter same passphrase again: [Type passphrase again]
密钥生成成功，则会提示如下：
Your identification has been saved in /home/you/.ssh/id_rsa. Your public key has been saved in /home/you/.ssh/id_rsa.pub. The key fingerprint is: 01:0f:f4:3b:ca:85:d6:17:a1:7d:f0:68:9d:f0:a2:db your_email@youremail.com
Step 4: 添加SSH key to GitHub
sudo apt-get install xclip #Downloads and installs xclip xclip -sel clip < ~/.ssh/id_rsa.pub # Copies the contents of the id_rsa.pub file to your clipboard
警告：重要的是要复制的关键，完全不添加换行符或空格。值得庆幸的是xclip的命令可以很容易地完全执行此设置。
- Go to your Account Settings
- Click "SSH Keys" in the left sidebar
- Click "Add SSH key"
- Paste your key into the "Key" field
- Click "Add key"
- Confirm the action by entering your GitHub password
Step 5: 测试
$ ssh -T git@github.com # Attempts to ssh to github
You may see this warning:
The authenticity of host github.com (207.97.227.239) can't be established. RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48. Are you sure you want to continue connecting (yes/no)?
输入”yes”,验证的指纹相匹配.
Hi username! You've successfully authenticated, but GitHub does not provide shell access.