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+# Ignore all `.DS_Store` files
+
+If you use git on a Mac, chances are you've accidentally committed a `.DS_Store` to a repo. I used to reflexively add `.DS_Store` to all my `.gitignore` files to avoid ever repeating that mistake.
+
+But there's a better way! You can add a global `.gitignore` file to your global config with this command:
+
+```bash
+git config --global core.excludesFile '~/.gitignore'
+```
+
+The single quotes around `~/.gitignore` aren't strictly necessary; if you don't use them, the `~` will just get expanded into the absolute path to your home directory.
+
+Under the hood, that command just adds this to your `~/.gitconfig`:
+
+```
+[core]
+        excludesFile = ~/.gitignore
+```