$ sudo apt-get update
$ sudo apt-get install libconfig-onion-perl 

libconfig-onion-perl is installed in your system.

Make ensure the libconfig-onion-perl package were installed using the commands given below,

$ sudo dpkg-query -l | grep libconfig-onion-perl *

You will get with libconfig-onion-perl package name, version, architecture and description in a table

libconfig-onion-perl package basic information: