$ sudo apt-get update
$ sudo apt-get install nvram-wakeup 

nvram-wakeup is installed in your system.

Make ensure the nvram-wakeup package were installed using the commands given below,

$ sudo dpkg-query -l | grep nvram-wakeup *

You will get with nvram-wakeup package name, version, architecture and description in a table

nvram-wakeup package basic information: