问题
Does the .gitignore file belong in the .git folder structure somewhere or in the main source files?
回答1:
Put .gitignore in the working directory. It doesn't work if you put it in the .git (repository) directory.
$ ls -1d .git*
.git
.gitignore
回答2:
As the other answers stated, you can place .gitignore within any directory in a Git repository. However, if you need to have a private version of .gitignore, you can add the rules to .git/info/exclude file.
回答3:
You can place .gitignore in any directory in git.
It's commonly used as a placeholder file in folders, since folders aren't usually tracked by git.
回答4:
When in doubt just place it in the root of your repository. See https://help.github.com/articles/ignoring-files/ for more information.
回答5:
If you want to do it globally, you can use the default path git will search for. Just place it inside a file named "ignore" in the path ~/.config/git
(so full path for your file is: ~/.config/git/ignore)
回答6:
You may also find a global .gitignore directly at the ~ path if you haven't created it in your folder project. This file is taken into account by all your .git projects.
回答7:
Also, if you create a new account on Github you will have the option to add .gitignore and it will be setup automatically on the right/standard location of your working place. You don't have to add anything in there at the begin, just alter the contents any time you want.
来源：https://stackoverflow.com/questions/5698148/where-does-the-gitignore-file-belong