[git] How to git ignore subfolders / subdirectories?

Seems this page still shows up on the top of Google search after so many years...

Modern versions of Git support nesting .gitignore files within a single repo. Just place a .gitignore file in the subdirectory that you want ignored. Use a single asterisk to match everything in that directory:

echo "*" > /path/to/bin/Debug/.gitignore
echo "*" > /path/to/bin/Release/.gitignore

If you've made previous commits, remember to remove previously tracked files:

git rm -rf /path/to/bin/Debug
git rm -rf /path/to/bin/Release

You can confirm it by doing git status to show you all the files removed from tracking.

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