appstream-util software package provides Utility to work with AppStream metadata, 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 appstream-util
appstream-util is installed in your system.
Make ensure the appstream-util package were installed using the commands given below,
$ sudo dpkg-query -l | grep appstream-util *
You will get with appstream-util package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Administration Utilities |
| Package | appstream-util |
| Version | 0.5.13-1 |
| Description | Utility to work with AppStream metadata |
| Sub Section | admin |