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