mkdir ${dir}
  cat scans-guy/${pg}.gif \
    | giftopnm \
    | ppmtopgm \
    | pnmdepth 255 \
    | gzip \
    > ${dir}/${pg}.pgm.gz
  zcat ${dir}/${pg}.pgm.gz \
    | cjpeg -optimize -greyscale -quality 80 \
    > ${dir}/${pg}.jpg

  && cat ${dir}/${otname}.pgm | cjpeg -optimize -greyscale -quality 80 > ${dir}/${otname}.jpg \