• Jettison (Mac App Store link) doesn’t offer as many bells and whistles as UnDock, but it has one unique advantage: It’s entirely automatic. With Jettison running, you simply close your MacBook’s.
• Download File and Directory – Scramble and Jettison - Permanently erase your important files and folders to prevent other users from recovering them via specialized software, using this.

About the App

• App name: Jettison
• App description: jettison (App: Jettison.app)
• App website: http://www.stclairsoft.com/Jettison/

Install the App

1. Press Command+Space and type Terminal and press enter/return key.
2. Run in Terminal app:
   ruby -e '$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)' < /dev/null 2> /dev/null ; brew install caskroom/cask/brew-cask 2> /dev/null
   and press enter/return key.
   If the screen prompts you to enter a password, please enter your Mac's user password to continue. When you type the password, it won't be displayed on screen, but the system would accept it. So just type your password and press ENTER/RETURN key. Then wait for the command to finish.
3. Run:
   brew cask install jettison

Apple Mac Review

Jettison automatically ejects external disks from your Mac before your computer goes to sleep and remounts them when it wakes. Simplify those last few seconds when you grab your MacBook and run out the door. Just close the lid and Jettison will automatically eject your backup drive, iPod, or whatever is connected so you can safely unplug it.

Jettison For Mac Review Cnet

Done! You can now use Jettison.

Mac