gnome-orca software package provides Scriptable screen reader, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gnome-orca
gnome-orca is installed in your system.
Make ensure the gnome-orca package were installed using the commands given below,
$ sudo dpkg-query -l | grep gnome-orca *
You will get with gnome-orca package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | GNOME |
| Package | gnome-orca |
| Version | 3.4.0-0ubuntu2 |
| Description | Scriptable screen reader |
| Sub Section | GNOME |