Mac OS - Show the full path in the Finder title bar

A very useful feature that you might want to enable on Mac OS is to always have the full path of the working directory displayed in the Finder title bar. 

> Using the command line, run the following command to activate it:
defaults write com.apple.finder _FXShowPosixPathInTitle -bool true; killall Finder

> To deactivate the feature run the command:
defaults write com.apple.finder _FXShowPosixPathInTitle -bool false; killall Finder

NOTE: The above commands will terminate all of your open Finder windows. If you do not wish to have your Finder windows closed, you can run the commands without the
"; killall Finder" part. In that case, only new windows will have the full path until you close and reopen the ones that do not have it. 

How to "cheat" from reopening all of your Finder windows:

• Option A) On your Finder icon in your Dock, hold the ⌥ (alt/option) key and Right-Click, then Click Relaunch.
• Option B) Bring in-focus a Finder window. Hold the key Shift on the keyboard and click the  menu. The option Force Quit Finder will be available.  

Tip: You can Show/Hide the Path Bar at the bottom of the Finder windows at anytime from the menu. Bring in-focus a Finder window and to to View > Show Path Bar. This is useful if you need to instantly navigate up several folders. 

Bonus: Show/Hide the hidden files in Finder. 

1. Open the folder where you want to display the hidden files in Finder.
2. Hold down the keys Command, Shift and Period: cmd + shift + .
3. The hidden files and folders on your Mac will then appear partially transparent.