To untrack a single file that has already been added/initialized to your repository, i.e. , stop tracking the file but not delete it from your system use: git rm --cached filename

To untrack every file that is now in your .gitignore:

First commit any outstanding code changes , and then, run this command:

git rm -r --cached .

This removes any changed files from the index (staging area), then just run:

git add .

Commit it:

git commit -m ".gitignore is now working"

To undo git rm --cached filename, use git add filename.

Make sure to commit all your important changes before running git add . Otherwise, you will lose any changes to other files.