You can convert a batch of .arw (Sony RAW) images to .jpg on Ubuntu using ImageMagick, dcraw, or RawTherapee. Here are a few methods:

Method 1: Using dcraw and imagemagick (Recommended for CLI)

1. Install the required packages:

sudo apt update
sudo apt install dcraw imagemagick

3. Convert all .arw files in a directory to .jpg:

for file in *.arw; do 
    dcraw -c "$file" | convert - "${file%.arw}.jpg"
done

• dcraw -c "$file": Converts the RAW file to a standard format.
• convert - "${file%.arw}.jpg": Converts it to JPG.

Method 2: Using rawtherapee-cli (For better color processing)

1. Install RawTherapee:

sudo apt install rawtherapee

2. Create output directory:

mkdir output

3. Convert all .arw files:

rawtherapee-cli -o ./output/ -j95 -c *.arw

• -o ./output/ → Output directory.
• -j95 → Set JPEG quality to 95%.
• -c → Process all files.

Method 3: Using darktable-cli (For better control)

1. Install darktable:

sudo apt install darktable

2. Create output directory:

mkdir output

2. Convert images:

for file in *.arw; do 
    darktable-cli "$file" "output/${file%.arw}.jpg"
done

Method 4: Using ufraw (Older tool)

1. Install ufraw:

sudo apt install ufraw

2. Convert files:

for file in *.arw; do 
    ufraw-batch --out-type=jpeg --output="${file%.arw}.jpg" "$file"
done

Which method should you choose?

• For quick conversion: Use dcraw + ImageMagick.
• For better color & quality: Use RawTherapee or Darktable.
• For lightweight processing: Use ufraw.