Generating a new SSH key and adding it to the ssh-agent
命令老是记不住
https://help.github.com/en/articles/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent
ssh-keygen -t rsa -b 4096 -C "your_email@example.com" ➜ ~ git config --global user.name "xxx" ➜ ~ git config --global user.email "xxx@qq.com"