djview4 software package provides Viewer for the DjVu image format, 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 djview4
djview4 is installed in your system.
Make ensure the djview4 package were installed using the commands given below,
$ sudo dpkg-query -l | grep djview4 *
You will get with djview4 package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Graphics |
| Package | djview4 |
| Version | 4.9-1 |
| Description | Viewer for the DjVu image format |
| Sub Section | Graphics |