I'm interested in efficient processing of RAW photos on Linux. I've played with RAW a little, but so far I've always reverted back to JPG as I can't be bothered to spend hours doing post-processing. But if I could find a pretty quick way of tweaking RAW photos then I might try again.
May I suggest RawStudio? It has support for batch operations of the type you're asking for, and has dramatically simplified my post-processing workflow over my old approach of ufraw + GIMP. If you're familiar with similar "workflow" products on other platforms, the UI should feel pretty comfortable.
UFRaw also provides a batch processing command - just open the first image, apply your settings, then save those with the option "Create ID File" set to "only". Then you can use ufraw-batch to apply the settings from this .ufraw file to your images.
I recommend darktable. It has the features you need, plus some more. It is not overwhelming though. I like it, because the original photos are not modified. A recipe file with the postprocessing instruction is stored instead.
[Bibble Pro] is a commercial application, but it allows you to copy settings from one image to another. It also has a very advanced batch processing mode that simplifies the process of exporting a large number of RAW files to JPEG, TIFF or any other format that Bibble supports.