Create a global .gitignore file

[jiansoung]

You can create a global .gitignore file, which is a list of rules for ignoring files in every Git repository on your computer. For example, you might create the file at ~/.gitignore_global and add some rules to it.

Open Terminal.
Run the following command in your terminal:
git config --global core.excludesFile ~/.gitignore_global

References

• Create a global ignoring files