libfile-modified-perl software package provides module to check if files have changed, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libfile-modified-perl
libfile-modified-perl is installed in your system.
Make ensure the libfile-modified-perl package were installed using the commands given below,
$ sudo dpkg-query -l | grep libfile-modified-perl *
You will get with libfile-modified-perl package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Perl |
| Package | libfile-modified-perl |
| Version | 0.09-1 |
| Description | module to check if files have changed |
| Sub Section | Perl |