1. 生成ssh-keygen

$ ssh-keygen -t rsa -C "your email address"

2. 查看id_rsa.pub文件

$ cat ~/.ssh/id_rsa.pub

3. 把id_rsa.pub文件内容复制到github
   

   image.png

4. 测试是否配置成功

$ ssh -T git@github.com
# 有如下信息则表示配置成功
# Hi username! You've successfully authenticated, but GitHub does not provide shell access.

5. 重新配置github仓库地址

$ git remove -v # 解除与现有远程仓库的关联
$ git remote add origin git@github.com:github_usernmae/project_name.git

到这里就大功告成可以免密码使用啦