libextlib-ruby software package provides Transitional package for ruby-extlib, 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 libextlib-ruby
libextlib-ruby is installed in your system.
Make ensure the libextlib-ruby package were installed using the commands given below,
$ sudo dpkg-query -l | grep libextlib-ruby *
You will get with libextlib-ruby package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | libextlib-ruby |
| Version | 0.9.15-3 |
| Description | Transitional package for ruby-extlib |
| Sub Section | libs |