ess software package provides Emacs mode for statistical programming and data analysis, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ess
ess is installed in your system.
Make ensure the ess package were installed using the commands given below,
$ sudo dpkg-query -l | grep ess *
You will get with ess package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | GNU R |
| Package | ess |
| Version | 12.04-4-1 |
| Description | Emacs mode for statistical programming and data analysis |
| Sub Section | Gnu-r |