rgxg software package provides command-line tool to generate regular expressions, 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 rgxg
rgxg is installed in your system.
Make ensure the rgxg package were installed using the commands given below,
$ sudo dpkg-query -l | grep rgxg *
You will get with rgxg package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Utilities |
| Package | rgxg |
| Version | 0.1-1 |
| Description | command-line tool to generate regular expressions |
| Sub Section | Utils |