$ sudo apt-get update
$ sudo apt-get install erlang-lhttpc 

erlang-lhttpc is installed in your system.

Make ensure the erlang-lhttpc package were installed using the commands given below,

$ sudo dpkg-query -l | grep erlang-lhttpc *

You will get with erlang-lhttpc package name, version, architecture and description in a table

erlang-lhttpc package basic information: