Home / Lua Scripts Manual / scripts / examples / multi_os
< moduleExample
panels_demo >

# multi_os

## 🔗Name

multi_os.lua - an example script that runs on linux, MacOS, and Windows.

## 🔗Description

multi_os is an example of how to write a script that will run on different operating systems. It uses the lua-scripts libraries to lessen the amount of code that needs to be written, as well as gaining access to tested cross-platform routines. This script also performs a function that some may find useful. It creates a button in the lighttable selected images module that extracts the embedded jpeg image from a raw file, then imports it and groups it with the raw file. A keyboard shortcut is also created. A key combination can be assigned to the shortcut in the lua preferences and then the action can be invoked by hovering over the image and pressing the key combination.

## 🔗Usage

- start this script from script manager
- start darktable, open prefreences, go to lua options and update the executable location if you are running Windows or MacOS, then restart darktable.
- select an image or images
- click the button to extract the jpeg

## 🔗Additional Software Required

- ufraw-batch - https://ufraw.sourceforge.net MacOS - install with homebrew

## 🔗Limitations

## 🔗Author

Bill Ferguson - wpferguson@gmail.com

## 🔗Change Log

< moduleExample
panels_demo >