untrack files in git code example
Example 1: git ignore still tracking
git rm --cached <file>
git rm -r --cached <folder>
Example 2: git untrack file
git rm --cached filename
Example 3: github untrack files
git rm -r --cached .
Example 4: apply gitignore after commit
git rm --cached $file
Example 5: git untrack
git rm -r --cached <file>
Example 6: remove gitignore files
git ls-files --ignored --exclude-standard -z | xargs -0 git rm --cached
git commit -am "Remove ignored files"
// answer from: thSoft