kde-workspace software package provides KDE Plasma Workspace components, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install kde-workspace
kde-workspace is installed in your system.
Make ensure the kde-workspace package were installed using the commands given below,
$ sudo dpkg-query -l | grep kde-workspace *
You will get with kde-workspace package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | KDE |
| Package | kde-workspace |
| Version | 4:4.11.11-0ubuntu0.2 |
| Description | KDE Plasma Workspace components |
| Sub Section | KDE |