emacs24 software package provides GNU Emacs editor (with GTK+ user interface), 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 emacs24
emacs24 is installed in your system.
Make ensure the emacs24 package were installed using the commands given below,
$ sudo dpkg-query -l | grep emacs24 *
You will get with emacs24 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Editors |
| Package | emacs24 |
| Version | 24.3+1-2ubuntu1 |
| Description | GNU Emacs editor (with GTK+ user interface) |
| Sub Section | Editors |