Global .gitignore

Instead of adding platform-specific files like .DS_Store to .gitignore file of every single project, you can just create a global .gitignore file.

To do that, first create a new .gitignore file on the root (or wherever you want):

touch ~/.gitignore

Add the files you don’t want to track to it:

echo .DS_Store >> ~/.gitignore

Finally tell introduce your global .gitignore file to git:

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