how to remove a listed file from gitignore code example

Example 1: git remove all files from gitignore

git ls-files -i --exclude-from=.gitignore | %{git rm --cached $_}

// works with windows powershell

Example 2: git remove all files in gitignore

git ls-files -i -z --exclude-from=.gitignore | xargs -0 git rm --cached