D:\HARASAWA>mkdir i-language
D:\HARASAWA>cd i-language
D:\HARASAWA\i-language>echo "# i-language" >> README.md
D:\HARASAWA\i-language>git init
Initialized empty Git repository in D:/HARASAWA/i-language/.git/
D:\HARASAWA\i-language>git add README.md
D:\HARASAWA\i-language>git config --global user.email "nobumichiharasawa@gmail.com"
D:\HARASAWA\i-language>git config --global user.name "i-language"
D:\HARASAWA\i-language>git commit -m "first commit"
[master (root-commit) c717f70] first commit
 1 file changed, 1 insertion(+)
 create mode 100644 README.md
D:\HARASAWA\i-language>git branch -M main
D:\HARASAWA\i-language>git remote add origin https://github.com/i-language/i-language.git
D:\HARASAWA\i-language>git push -u origin main
info: please complete authentication in your browser...
Enumerating objects: 3, done.
Counting objects: 100% (3/3), done.
Writing objects: 100% (3/3), 233 bytes | 233.00 KiB/s, done.
Total 3 (delta 0), reused 0 (delta 0), pack-reused 0
To https://github.com/i-language/i-language.git
 * [new branch]      main -> main
branch 'main' set up to track 'origin/main'.
D:\HARASAWA\i-language>