$ sudo apt-get update
$ sudo apt-get install lcmaps-plugins-basic-posixenf 

lcmaps-plugins-basic-posixenf is installed in your system.

Make ensure the lcmaps-plugins-basic-posixenf package were installed using the commands given below,

$ sudo dpkg-query -l | grep lcmaps-plugins-basic-posixenf *

You will get with lcmaps-plugins-basic-posixenf package name, version, architecture and description in a table

lcmaps-plugins-basic-posixenf package basic information: