$ sudo apt-get update
$ sudo apt-get install libdesktop-agnostic-data 

libdesktop-agnostic-data is installed in your system.

Make ensure the libdesktop-agnostic-data package were installed using the commands given below,

$ sudo dpkg-query -l | grep libdesktop-agnostic-data *

You will get with libdesktop-agnostic-data package name, version, architecture and description in a table

libdesktop-agnostic-data package basic information: