libfilesystem-ruby1.9 software package provides Transitional package for ruby-filesystem, 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 libfilesystem-ruby1.9
libfilesystem-ruby1.9 is installed in your system.
Make ensure the libfilesystem-ruby1.9 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libfilesystem-ruby1.9 *
You will get with libfilesystem-ruby1.9 package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Old Libraries |
| Package | libfilesystem-ruby1.9 |
| Version | 0.5-5.1 |
| Description | Transitional package for ruby-filesystem |
| Sub Section | oldlibs |