The script attempts to install tomcat8, if that's not in apt-cache it will attempt to install tomcat7, then tomcat6. If you want to manually specify a tomcat version there's a commented out line you can modify. Have at it.

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

Once installation is done you can access guacamole by browsing to: http://<host_or_ip>:8080/guacamole/ The default credentials are guacadmin as both username and password. Please change them or disable guacadmin after install!