Annotate Images with Date

annodate_images.sh

#!/bin/bash 

[ ! -d out ] && mkdir out

for img in "$@"; do \
  img_width="$(identify -format %w $img)"; \
  img_height="$(identify -format %h $img)"; \
  label_height=$(bc -l <<< "$img_height/50"); \
  img_date=$(stat -l -t "%F" $img | awk '{print $6}'); \
  convert -background '#0008' -fill white -gravity center -size ${img_width}x$label_height \
    caption:"$img_date" \
    -pointsize $label_height \
    "$img" +swap -gravity south -composite  "out/$img"; \
done