drawxtl software package provides crystal structure viewer, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install drawxtl
drawxtl is installed in your system.
Make ensure the drawxtl package were installed using the commands given below,
$ sudo dpkg-query -l | grep drawxtl *
You will get with drawxtl package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Science |
| Package | drawxtl |
| Version | 5.5-3 |
| Description | crystal structure viewer |
| Sub Section | Science |