RTbatch

RTbatch is a Python script which allows you to easily process an input image with all of RawTherapee's built-in processing profiles and export either full-size pictures or lower resolution previews. RTbatch can also export markdown code for displaying galleries of your images on websites that parse markdown (currently this is only implemented for Octopress using the imgcap or img tags).

The script also comes with a command-line utility, RTbatch_cli, with which you can call it and pass all arguments in a single line from your terminal.

Source: https://github.com/TheChymera/RTbatch