Github 用不了SHA-1，无法push到远程仓库的问题

运行git push origin master时，遇到的问题如下：

ERROR: You're using an RSA key with SHA-1, which is no longer allowed. Please use a newer client or a different key type.

解决：

用运行ssh-keygen -t ed25519，新建一个key pair，添加到github就可以正常push啦。