fbzx software package provides ZX Spectrum emulator, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install fbzx
fbzx is installed in your system.
Make ensure the fbzx package were installed using the commands given below,
$ sudo dpkg-query -l | grep fbzx *
You will get with fbzx package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Other OSs and file systems |
| Package | fbzx |
| Version | 3.0.0-1 |
| Description | ZX Spectrum emulator |
| Sub Section | otherosfs |