guake software package provides Drop-down terminal for GNOME Desktop Environment, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install guake
guake is installed in your system.
Make ensure the guake package were installed using the commands given below,
$ sudo dpkg-query -l | grep guake *
You will get with guake package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | X Window System software |
| Package | guake |
| Version | 0.4.4-1ubuntu1 |
| Description | Drop-down terminal for GNOME Desktop Environment |
| Sub Section | x11 |