$ sudo apt-get update
$ sudo apt-get install knot-dnsutils 

knot-dnsutils is installed in your system.

Make ensure the knot-dnsutils package were installed using the commands given below,

$ sudo dpkg-query -l | grep knot-dnsutils *

You will get with knot-dnsutils package name, version, architecture and description in a table

knot-dnsutils package basic information: