$ sudo apt-get update
$ sudo apt-get install libstartup-notification0 

libstartup-notification0 is installed in your system.

Make ensure the libstartup-notification0 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libstartup-notification0 *

You will get with libstartup-notification0 package name, version, architecture and description in a table

libstartup-notification0 package basic information: