gtk-sharp3 software package provides GTK# 3.0 suite, CLI bindings for GTK+, 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 gtk-sharp3
gtk-sharp3 is installed in your system.
Make ensure the gtk-sharp3 package were installed using the commands given below,
$ sudo dpkg-query -l | grep gtk-sharp3 *
You will get with gtk-sharp3 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Mono/CLI |
| Package | gtk-sharp3 |
| Version | 2.99.2-2ubuntu1 |
| Description | GTK# 3.0 suite, CLI bindings for GTK+ |
| Sub Section | Cli-mono |