aprx software package provides APRS Digipeater and iGate, 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 aprx
aprx is installed in your system.
Make ensure the aprx package were installed using the commands given below,
$ sudo dpkg-query -l | grep aprx *
You will get with aprx package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Ham Radio |
| Package | aprx |
| Version | 2.08.svn593+dfsg-2 |
| Description | APRS Digipeater and iGate |
| Sub Section | Hamradio |