$ sudo apt-get update
$ sudo apt-get install openafs-fileserver 

openafs-fileserver is installed in your system.

Make ensure the openafs-fileserver package were installed using the commands given below,

$ sudo dpkg-query -l | grep openafs-fileserver *

You will get with openafs-fileserver package name, version, architecture and description in a table

openafs-fileserver package basic information: