Everyone needs a turtle.
Turtlify is a kind reminder to poeple who leave their computer unlocked while going away. It's a basic principle of computer security that you never should do that. So just give them a turtle in their shell. Why? Because there is a poor turtle without a shell and it needs a new home!
To marry your turtle with the your (zsh, bash,...) shell, run the following command:
wget -q https://raw.githubusercontent.com/tburny/turtlify/master/turtlify.sh && chmod +x turtlify.sh && turtlify.sh | bash
This will download the turtlify script, make it executable and execute it afterwards. You can see the source code anytime (and should check it) before you do that.
If you want to remove a turtle someone gave your shell, just remove the according echo command at the end of ~/.bashrc and/or ~/.zshrc with your favourite $EDITOR.
You should know what you are doing and that you are responsible for your actions. Also, see the LICENSE.txt file in this repository.