sudo apt-get sudo apt-get install git git --version git config --user.name "wanghao" git config --global user.name "wanghao" <!--creat a new folder and go in--> <!--creat a ssh public key--> ssh-keygen -t rsa -C "1106425813@qq.com" <!--copy this public key and paste them into the github--> cd ~/.ssh gedit id_rsa.pub <!--then go to your github.com and copy--> <!--ping git to test whether connect or not --> ssh -T git@github.com <!--if connect, then "Hi wangqinghe95! You've successfully authenticated, but GitHub does not provide shell access."-->