Show hidden files/folders

Here is the quick version:

1. Open up Terminal (you can find it via Spotlight or in /Applications/Utilities/

2. Copy/paste the following command:

defaults write AppleShowAllFiles YES

3. You now need to relaunch the Finder. You can do it…
… via Terminal by pasting this:

killall Finder

… or by holding down the option-key (⌥) then right-clicking on the Finder icon in he dock and choosing “Relaunch”.

To hide the hidden files and folders again, just repeat that process and replace the “YES” with a “NO”

For a more detailed look at this function and a neat trick to create a “shortcut/alias” please take a look at this article: