ruby-gd software package provides Extension library to use GD graphics library from Ruby, 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 ruby-gd
ruby-gd is installed in your system.
Make ensure the ruby-gd package were installed using the commands given below,
$ sudo dpkg-query -l | grep ruby-gd *
You will get with ruby-gd package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Ruby |
| Package | ruby-gd |
| Version | 0.8.0-6 |
| Description | Extension library to use GD graphics library from Ruby |
| Sub Section | Ruby |