在命令行中输入
ssh-keygen -t rsa -C "git@git.com" 你的GIT邮箱账户
按3个回车，密码为空。
Your identification has been saved in /home/tekkub/.ssh/id_rsa.
Your public key has been saved in /home/tekkub/.ssh/id_rsa.pub.
The key fingerprint is:
………………
最后得到了两个文件：id_rsa和id_rsa.pub
打开id_rsa.pub ，复制里面的信息，在git页面add SSH KEY
复制里面的信息，title 随便取
配置成功，就可以CLONE啦