git生成ssh key

步骤

检查SSH keys是否存在
生成新的ssh key
将ssh key添加到GitHub中

1. 检查SSH keys是否存在

输入下面的命令，如果有文件

id_rsa.pub

或

id_dsa.pub

，则直接进入步骤3将SSH
key添加到GitHub中，否则进入第二步生成SSH key

ls -al ~/.ssh
# Lists the files in your .ssh directory, if they exist

2. 生成新的ssh key

第一步：生成public/private rsa key pair

在命令行中输入

ssh-keygen -t rsa -C "your_email@example.com"

默认会在相应路径下（/your_home_path）生成

id_rsa

和

id_rsa.pub

两个文件，如下面代码所示

ssh-keygen -t rsa -C "your_email@example.com"
# Creates a new ssh key using the provided email
Generating public/private rsa key pair.
Enter file in which to save the key (/your_home_path/.ssh/id_rsa):

第二步：输入passphrase（本步骤可以跳过）

设置passphrase后，进行版本控制时，每次与GitHub通信都会要求输入passphrase，以避免某些“失误”

Enter passphrase (empty for no passphrase): [Type a passphrase]
Enter same passphrase again: [Type passphrase again]

sample result:

Your identification has been saved in /your_home_path/.ssh/id_rsa.
Your public key has been saved in /your_home_path/.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@example.com

第三步：将新生成的key添加到ssh-agent中:

# start the ssh-agent in the background
eval "$(ssh-agent -s)"
Agent pid 59566
ssh-add ~/.ssh/id_rsa

3. 将ssh key添加到GitHub中

用自己喜欢的文本编辑器打开

id_rsa.pub

文件，里面的信息即为SSH key，将这些信息复制到GitHub的

Add
SSH key

页面即可