If apt-get fails, likely due to missing dependencies or differing names outside of Ubuntu 16.04.01 LTS official sources, we should just exit and inform the user, no need to keep going...
Script for installing Guacamole 0.9.10 on Ubuntu 16.04.1 with MySQL
Run script, enter MySQL Root Password and Guacample User password. Guacamole User is used to connect the the Guacamole Database.
How to Run Download file directly from here: wget https://raw.githubusercontent.com/MysticRyuujin/guac-install/master/guac-install.sh
Make it executable: chmod +x guac-install.sh
Run it as root: ./guac-install.sh