notify-osd-icons software package provides Notify-OSD icons, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install notify-osd-icons
notify-osd-icons is installed in your system.
Make ensure the notify-osd-icons package were installed using the commands given below,
$ sudo dpkg-query -l | grep notify-osd-icons *
You will get with notify-osd-icons package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | X Window System software |
| Package | notify-osd-icons |
| Version | 0.8+14.04.20131204-0ubuntu1 |
| Description | Notify-OSD icons |
| Sub Section | x11 |