Why can I not commit? (Your branch is up-to-date with 'origin/master', no changes added to commit)

Question

I have been having some trouble committing a file to GitHub. I can make it to git add, but soon as I try $ git commit -m 'my message' I get an error, not allowing me to complete the process of adding a file.

$ git add HelloWorld.md

$ git commit -m 'Hello world'

I get the following answer (deleted: README.md & .DS_Store are in red):

On branch master

Your branch is up-to-date with 'origin/master'.

Changes not staged for commit:
        deleted:    README.md

Untracked files:
        .DS_Store

no changes added to commit

Answer 1

If you changed the file but there is still nothing to commit, maybe you didn't add the file to git. (or replaced it after adding). Try adding the file before committing:

git add filename.ext

Or simply add the whole dir:

git add .