Force git to update .gitignore

I have a .gitignore file, and it's ignoring some files. I have updated the .gitignore file (removed some filenames and added some filenames). This is not reflected in git status. How can I force git to update these changes, so that track files which are not tracked before and vice versa.

I have tried this question, still all of my files are not tracked (according to my updated .gitignore). (In simple, how can I force git to retract files once .gitignore is updated or deleted).

You will have to clear the existing git cache first.

Remove the cache of all the files

• git rm -r --cached .

Remove the cache of specific file

• git rm -r --cached <file_name.ext>

Once you clear the existing cache, add/stage file/files in the current directory and commit

• git add . // To add all the files
• git add <file_name.ext> // To add specific file
• git commit -m "Suitable Message"

As pointed out by Scott Biggs in comment that "This works for both adding a file that was once ignored as well as ignoring a file that was once tracked"

If you want to add all files, delete all filenames from .gitignore file, not the .gitignore file and commit it, then try

git config --global core.excludesfile ~/.gitignore_global

Some files are ignored by the git depending on the OS (like .dll in windows). For more information.

Now

git add .

git status

git commit -m "your message"

Or

You can try a simple hack, it may or may not work. Delete all filenames from .gitignore file and add this line !*.*, then add and commit.

UPDATE

Simple, I'll explain with an example. Say you have a build folder which is already added and tracked by git. Now you decide not to track this folder.

1. Add this folder (build) to .gitignore
2. Delete build folder
3. Commit your changes

From now on git will not track build folder.

It works

//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

git commit -m "Atualizando .gitignore para..."