$ sudo apt-get update
$ sudo apt-get install kvirc-dbg 

kvirc-dbg is installed in your system.

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

$ sudo dpkg-query -l | grep kvirc-dbg *

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

kvirc-dbg package basic information: