$ sudo apt-get update
$ sudo apt-get install knot-resolver-dbg 

knot-resolver-dbg is installed in your system.

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

$ sudo dpkg-query -l | grep knot-resolver-dbg *

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

knot-resolver-dbg package basic information: