krfb software package provides Desktop Sharing utility, 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 krfb
krfb is installed in your system.
Make ensure the krfb package were installed using the commands given below,
$ sudo dpkg-query -l | grep krfb *
You will get with krfb package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Network |
| Package | krfb |
| Version | 4:4.8.2-0ubuntu1 |
| Description | Desktop Sharing utility |
| Sub Section | Net |