IDEA使用git上传代码到GitHub

GitHub新建空白仓库初始化上传

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echo "# mydemo" >> README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/xiyanbeixue/mydemo.git
git push -u origin master

上传项目所有代码

git add .
git commit -m 基础框架代码

#上面初始化提交已经输入过远程仓库地址，此次不输入，否侧报错：fatal: remote origin already exists.
git remote origin https://github.com/xiyanbeixue/mydemo.git  ()

git push -u origin master

上传指定文件

git add README.md
git commit -m 注释修改
git push -u origin master