Make .gitignore ignore everything except a few files

Question

I understand that a .gitignore file cloaks specified files from Git\'s version control. I have a project (LaTeX) that generates lots of extra files (.auth, .dvi, .pdf, logs,

Answer 1

I had a problem with subfolder.

Does not work:

/custom/*
!/custom/config/foo.yml.dist

Works:

/custom/config/*
!/custom/config/foo.yml.dist