aolserver4-nspostgres software package provides AOLserver 4 module: Postgres connector, 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 aolserver4-nspostgres
aolserver4-nspostgres is installed in your system.
Make ensure the aolserver4-nspostgres package were installed using the commands given below,
$ sudo dpkg-query -l | grep aolserver4-nspostgres *
You will get with aolserver4-nspostgres package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Web Software |
| Package | aolserver4-nspostgres |
| Version | 4.5+20110709-2 |
| Description | AOLserver 4 module: Postgres connector |
| Sub Section | web |