git init
git add .
git commit -m "comment"
git branch -M master   # main是支名
git remote add origin https://github.com/zhongshsh/GitHubGuide.git   # 增加远程节点
git push -u origin master    # 将文件上传

git remote -v   # 查看连接到哪个远程库

git rm -r --cached .idea