rbenv software package provides simple per-user Ruby version manager, 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 rbenv
rbenv is installed in your system.
Make ensure the rbenv package were installed using the commands given below,
$ sudo dpkg-query -l | grep rbenv *
You will get with rbenv package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Ruby |
| Package | rbenv |
| Version | 0.4.0+debian1-2 |
| Description | simple per-user Ruby version manager |
| Sub Section | Ruby |