ubuntu使用git的时：Warning: Permanently added the RSA host key for IP address '13.250.177.223' to the list of known hosts.

1：问题现象：

hlp@hlp:~/code/github_code/catch_imooc1$ git push origin master
Warning: Permanently added the RSA host key for IP address '13.250.177.223' to the list of known hosts.
Everything up-to-dat

描述：上述那条警告的大概意思就是：警告：为IP地址'13.250.177.223'的主机（RSA连接的）持久添加到hosts文件中，那就来添加吧！

2：修改方案：

在本地/etc/hosts 文件中添加： 13.250.177.223    github.com

注意该文件的写权限：
hlp@hlp:/etc$ ll hosts
-rw-r--r-- 1 root root 230 7月  16 22:54 hosts
hlp@hlp:/etc$ sudo vim hosts
[sudo] password for hlp: 
hlp@hlp:/etc$ cat hosts
127.0.0.1    localhost
127.0.1.1    hlp-Lenovo-G405
13.250.177.223   github.com
# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

测试验证：
hlp@hlp:~/code/github_code/git_mytest$ git pull
Already up to date

 3：参考博文：

  https://blog.csdn.net/zhoucheng05_13/article/details/52831703

4：声明：

  该博文只是为了规范自己的习惯，做问题记录，如有问题，请谅解。