file software package provides Determines file type using magic numbers, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install file
file is installed in your system.
Make ensure the file package were installed using the commands given below,
$ sudo dpkg-query -l | grep file *
You will get with file package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Utilities |
| Package | file |
| Version | 5.09-2ubuntu0.6 [amd64, i386], |
| Description | Determines file type using magic numbers |
| Sub Section | Utils |