Binary package “libupsclient4” in ubuntu bionic

network UPS tools - client library

 Network UPS Tools (NUT) is a client/server monitoring system that
 allows computers to share uninterruptible power supply (UPS) and
 power distribution unit (PDU) hardware. Clients access the hardware
 through the server, and are notified whenever the power status
 changes.
 .
 This package provides the shared client library.