$ sudo apt-get update
$ sudo apt-get install libmemcached-tools 

libmemcached-tools is installed in your system.

Make ensure the libmemcached-tools package were installed using the commands given below,

$ sudo dpkg-query -l | grep libmemcached-tools *

You will get with libmemcached-tools package name, version, architecture and description in a table

libmemcached-tools package basic information: