Learned two things about Git

Use ssh to avoid GitHub password every time

1. Creating a new SSH key and adding it to the ssh-agent
2. Adding a new SSH key to your GitHub account
3. Changing a remote’s URL

Git delete

Stackoverflow Answer

1.Delete from both local disk and GitHub

git rm test.txt
git commit -m "remove"
git push origin master

2.Delete only from GitHub

git rm --cached test.txt
git commit -m "remove"
git push origin master