Sometimes you need to ignore files from repository afterwards. In this case you could use
git rm -r --cached . to remove all cached files. This leads to removing files in repository
and also when other people pull updates. In some cases you need to keep ignored files, like
custom configuration. Instead of remove all files, git is also able to remove files from
repository and keep ignored files in filesystem. Have a look at the following line of code:
git ls-files --ignored --exclude-standard | sed 's/.*/"&"/' | xargs git rm -r --cached
List all ignored files, including files and folders with whitespace and remove them from git index and keep ignored files in local filesystem.