$ sudo apt-get update
$ sudo apt-get install handlersocket-mysql-5.5 

handlersocket-mysql-5.5 is installed in your system.

Make ensure the handlersocket-mysql-5.5 package were installed using the commands given below,

$ sudo dpkg-query -l | grep handlersocket-mysql-5.5 *

You will get with handlersocket-mysql-5.5 package name, version, architecture and description in a table

handlersocket-mysql-5.5 package basic information: