gkrellshoot software package provides Plugin for gkrellm to lock the screen and make screenshots, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gkrellshoot
gkrellshoot is installed in your system.
Make ensure the gkrellshoot package were installed using the commands given below,
$ sudo dpkg-query -l | grep gkrellshoot *
You will get with gkrellshoot package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | X Window System software |
| Package | gkrellshoot |
| Version | 0.4.4-1 |
| Description | Plugin for gkrellm to lock the screen and make screenshots |
| Sub Section | x11 |