Script that uses imagemagick to append a watermark to the bottom of each image in the given folder.

append_watermark.sh

#!/bin/sh
#                _                 __       _     _____
#   __  ______  (_)___ ___  ____ _/ /______(_)  _/__  /  _  _____  _________
#  / / / / __ \/ / __ \__ \/ __ \/ __/ ___/ / |/_/ / /  | |/_/ _ \/ ___/ __ \
# / /_/ / / / / / / / / / / /_/ / /_/ /  / />  <  / /___>  </  __/ /  / /_/ /
# \__,_/_/ /_/_/_/ /_/ /_/\__,_/\__/_/  /_/_/|_| /____/_/|_|\___/_/   \____/
#
# 2012-11-02
# Script to use imagemagick to append a watermark to the bottom of a folder of images.
#
# Usage:
#
# Copy the watermark.jpg you want to use into the folder where the images are.
# - works best if the image has a white background as that will be the default
#   imagemagick uses to fill in the void
# - it will skip the watermark.jpg and .dotfiles in the folder
#
# Example:
# %> cd where_my_pics_at
# %> append_watermark.sh .

PREFIX=${PREFIX:-'photography'}

for i in `find $1`;
do
  new_name="${PREFIX}_`echo \"$i\" | sed -e 's/.jpg//' | sed -e 's/\.\///'`.jpg"
  if [[ $i == ./.* ]] || [[ $i == *watermark* ]] || [[ $i == . ]] || [[ $i == *$PREFIX* ]]; then
    echo "Skipping ${i}"
  else
    echo "Appending watermark to: ${i} -> ${new_name}"
    convert -append "$i" watermark.jpg "$new_name"
  fi
done