Imagemagick cannot convert raw image files in recent Ubuntu versions because the ufraw-batch package is not available, due to it not being maintained anymore. We can however use darktable to do the conversion. To install darktable run:

sudo apt install darktable

You can then use this command that uses darktable-cli to convert the images:

find . -type f ( -iname "*.raw" -o -iname "*.nef" ) -exec sh -c 'darktable-cli {} ${0%.*}.jpg' {} ; -delete

The above command uses find to do the following:

• recursively search in the current folder: .


• for files only: -type f


• that their name ends either in .raw or .nef, irrespective of their case: ( -iname "*.raw" -o -iname "*.nef" )


• executes (-exec) this command to convert the found files to jpg: sh -c 'darktable-cli {} ${0%.*}.jpg' {} ;


• deletes the original files: -delete

Caution: Make sure to first test the command in a copied portion of your files to ensure that it works as intended!