Show system files / Show git ignore in osx

Question

By default it is not possible to see .gitignore files in osx. What is command to reveal these files?

Answer 1

Open the terminal and type

• on OS X 10.8:

  defaults write com.apple.Finder AppleShowAllFiles TRUE
  

• on OS X 10.9:

  defaults write com.apple.finder AppleShowAllFiles TRUE
  

Then you must relaunch finder:

killall Finder

Any file name in OS X prefixed with a '.' is considered "hidden".