proguard software package provides java class file shrinker, optimizer, and obfuscator, 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 proguard
proguard is installed in your system.
Make ensure the proguard package were installed using the commands given below,
$ sudo dpkg-query -l | grep proguard *
You will get with proguard package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Development |
| Package | proguard |
| Version | 4.8-0.1 |
| Description | java class file shrinker, optimizer, and obfuscator |
| Sub Section | devel |