Below you’ll find a quick and dirty live preview solution for OmegaT on GNU/Linux.

In order for it to work, you’ll need any command line converter to convert your target files to PDF, and any PDF viewer to view the converted file. In the solution provided here Zathura PDF viewer is used. It is a very lightweight, keyboard-driven (albeit with vi-like keybindings) application that can invert document colors using a custom color scheme, and, most importantly, it reloads documents as they are changed, but keeps the previously open position, which makes it ideal for live previewing. Target files are converted using LibreOffice since I had it installed anyway; but any other command line tool that converts to PDF would do.