srg.sh

#!/bin/bash

## Make globally available with:
# sudo cp srg.sh /usr/local/bin/srg
# sudo cp sRGB_v4_ICC_preference.icc /usr/local/bin/sRGB_v4_ICC_preference.icc
# sudo chmod a+x /usr/local/bin/srg

# Get the sRGB profile file from http://www.color.org/srgbprofiles.xalter

echo "== Convert to JPG with sRGB profile ==";

target_dir="srgb";

if [[ ! -d $target_dir ]]; then
        mkdir $target_dir;
        echo "Created $target_dir"
fi

for f in `find ./  -maxdepth 1 -type f \( -iname \*.jpg -o -iname \*.png -o -iname \*.tif \)`
do
        # Trim the ./ part .
        f=${f:2};
        filename=$(basename $f);
        new_filename="${filename%.*}.jpg"
        target="${target_dir}/${new_filename}";
        dir=$(dirname $f);

        convert  $f \
        -posterize 64 -depth 8 \
        -colorspace sRGB  -profile /usr/local/bin/sRGB_v4_ICC_preference.icc $target

        echo $target;
done