mmm-mode software package provides Multiple Major Mode for Emacs, 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 mmm-mode
mmm-mode is installed in your system.
Make ensure the mmm-mode package were installed using the commands given below,
$ sudo dpkg-query -l | grep mmm-mode *
You will get with mmm-mode package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Editors |
| Package | mmm-mode |
| Version | 0.5.1-2 |
| Description | Multiple Major Mode for Emacs |
| Sub Section | Editors |