git 第一次推代码

总是忘记第一次怎么推代码，记录一下

…or create a new repository on the command line
echo “# gn-test” >> README.md
git init
git add README.md
git commit -m “first commit”
git branch -M main
git remote add origin git@github.com:yy-tayu/gn-test.git
git push -u origin main
…or push an existing repository from the command line
git remote add origin git@github.com:yy-tayu/gn-test.git
git branch -M main
git push -u origin main