Install yp-tools by entering the following commands in the terminal:
sudo apt update sudo apt install yp-tools
Description:
Tools for working with Network Information System (NIS)
This package provides a number of tools for working with NIS installations including ypbind, ypset, ypwhich, ypcat, ypmatch, yppoll, ypchfn, ypchsh and yppasswd.
Homepage: http://www.linux-nis.org/
Version: 3.3-5.1
Section: universe/net