The Mac has this notion of invisible files. Sometimes you want to edit them. There are third party utilities like File Buddy which do this, but you can also natively view them if you squint sideways. Here are the instructions:
In Mac OS X, how do I view invisible files? – Knowledge Base
OS X 10.5.x
[...]
Mac OS X Invisible files
August 28th, 2008 · No Comments · Geek
Tags: Dialog Box·Double Click·Drop Down Menu·File Buddy·Home Folder·Invisible Files·Knowledge Base·Mac Files·Mac OS X·Notion·Os X·Party Utilities·Pull Down Menu·Pulldown Menu·Search Window·Squint·Third Party·Visibility