$ sudo apt-get update
$ sudo apt-get install bareos-filedaemon 

bareos-filedaemon is installed in your system.

Make ensure the bareos-filedaemon package were installed using the commands given below,

$ sudo dpkg-query -l | grep bareos-filedaemon *

You will get with bareos-filedaemon package name, version, architecture and description in a table

bareos-filedaemon package basic information: