$(HOME) the home folder as defined by the system

$(PICTURES_FOLDER) the pictures folder as defined by the system (usually “$HOME/Pictures”) $(DESKTOP) the desktop folder as defined by the system (usually “$HOME/Desktop”) $(USERNAME) your user account name on the system

$(FILE_NAME) basename of the imported image

$(FILE_EXTENSION) extension of the imported image

$(JOBCODE) unique identifier of the import job

$(SEQUENCE) a sequence number within the import job

$(MAX_WIDTH) maximum image width to limit within export session

$(MAX_HEIGHT) maximum image height to limit within export session

$(ID) unique identification number of the image in darktable's database

$(YEAR) year at the date of import

$(MONTH) month at the date of import

$(DAY) day at the date of import

$(HOUR) hour at the time of import

$(MINUTE) minute at the time of import

$(SECOND) second at the time of import

$(EXIF_YEAR) year the photo was taken (from Exif data)

$(EXIF_MONTH) month the photo was taken (from Exif data)

$(EXIF_DAY) day the photo was taken (from Exif data)

$(EXIF_HOUR) hour the photo was taken (from Exif data)

$(EXIF_MINUTE) minute the photo was taken (from Exif data)

$(EXIF_SECOND) seconds the photo was taken (from Exif data)

$(EXIF_ISO) ISO value of the photo (from Exif data)