By default, the Finder hides root-level directories (/usr, /lib, /etc, etc.,) from dialog boxes, which makes it hard to navigate there. Here’s one trick to make them accessible to the Finder’s — and every app’s — dialog boxes.

  1. In the Finder, type “shift command G” (”Go to folder”).
  2. Type “/usr” (for example) and click “Go”.
  3. Drag the tiny “usr” icon at the top of the window over to the sidebar.

Voilà! From now on, /usr will always be easily accessible to “open” and “save” dialog boxes in all your apps.

To make every file visible to the Finder — including those that begin with a “.”, such as .htaccess or .login — use TinkerTool.