apcupsd software package provides APC UPS Power Management (daemon), 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 apcupsd
apcupsd is installed in your system.
Make ensure the apcupsd package were installed using the commands given below,
$ sudo dpkg-query -l | grep apcupsd *
You will get with apcupsd package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Administration Utilities |
| Package | apcupsd |
| Version | 3.14.12-1.1 |
| Description | APC UPS Power Management (daemon) |
| Sub Section | admin |