libfs6 software package provides X11 Font Services library, you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libfs6
libfs6 is installed in your system.
Make ensure the libfs6 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libfs6 *
You will get with libfs6 package name, version, architecture and description in a table
| Distro | Ubuntu 17 04 zesty zapus |
| Section | Libraries |
| Package | libfs6 |
| Version | 2:1.0.7-1 |
| Description | X11 Font Services library |
| Sub Section | libs |