Git:Permission denied (publickey

查看是否有文件id_rsa以及文件id_rsa.pub

cd ~/.ssh
ls
id_rsa  id_rsa.pub  known_hosts

生成ssh key

ssh-keygen -t rsa -C "<github account>"
一路回车

验证ssh key是否在github上存在

ssh -v github.com

No more authentication methods to try.  
Permission denied (publickey).

不存在key

将SSH Key添加到ssh-agent

ssh-agent -s

将rsa key添加到ssh

ssh-add ~/.ssh/id_rsa

将rsa key配置到github account
进入github账号，Settings下，SSH and GPG keys->new SSH key
复制id_rsa.pub中的所有内容，然后Add SSH Key

最后验证添加的rsa key

ssh -T git@github.com