ssh-keygen -t rsa -C 'youremail@your.com' -f ~/.ssh/github_rsa
这一步不一定能成功,失败也不影响
ssh-agent bash ssh-add ~/.ssh/github_rsa ssh-add -l
cd ~/.ssh touch config
# github Host github.com HostName github.com PreferredAuthentications publickey IdentityFile ~/.ssh/github_rsa
ssh -T git@github.com