pdfgrep software package provides search in pdf files for strings matching a regular expression, 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 pdfgrep
pdfgrep is installed in your system.
Make ensure the pdfgrep package were installed using the commands given below,
$ sudo dpkg-query -l | grep pdfgrep *
You will get with pdfgrep package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Utilities |
| Package | pdfgrep |
| Version | 1.3.0-1 |
| Description | search in pdf files for strings matching a regular expression |
| Sub Section | Utils |