$ sudo apt-get update
$ sudo apt-get install php-letodms-lucene 

php-letodms-lucene is installed in your system.

Make ensure the php-letodms-lucene package were installed using the commands given below,

$ sudo dpkg-query -l | grep php-letodms-lucene *

You will get with php-letodms-lucene package name, version, architecture and description in a table

php-letodms-lucene package basic information: