gimp-normalmap software package provides Normal map plugin for GIMP, 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 gimp-normalmap
gimp-normalmap is installed in your system.
Make ensure the gimp-normalmap package were installed using the commands given below,
$ sudo dpkg-query -l | grep gimp-normalmap *
You will get with gimp-normalmap package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Graphics |
| Package | gimp-normalmap |
| Version | 1.2.2-0ubuntu2 |
| Description | Normal map plugin for GIMP |
| Sub Section | Graphics |