遇到的问题大致如下：

Push failed
Warning: Permanently added the RSA host key for IP address '13.250.177.223' to the list of known hosts.
                git@github.com: Permission denied (publickey).
                Could not read from remote repository.
                Please make sure you have the correct access rights
                and the repository exists.

明明其他github的项目都能提交代码和拉取代码，但是新项目死活上传不上去(没有用SSH的方式)

采用SSH的方式解决上传问题：

1.创建ssh相关文件

case@case-PC:~$ git config --global --list
...//验证邮箱
case@case-PC:~$ git config --global user.name case//设置全局用户名和邮箱
case@case-PC:~$ ssh-keygen -t rsa -C case@sina.com//生成秘钥，一路回车即可
...
case@case-PC:~$ cd /home/case/.ssh/
case@case-PC:~/.ssh$ ls
id_rsa  id_rsa.pub  known_hosts

2.找到id_rsa(最新github已经换成了id_rsa.pub)文件并打开，复制到github的setting->SSH and GPG keys ->SSH keys的New SSH key即可

3.上传到github

git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/case/xxdemo.git
git push -u origin master

4.查看原文