#!/bin/bash
# Add a exif-comment to all JPEG-Files from this directory and all subdirectorys
#
# (c) by Ulf Bartholomäus ub1x@gmx.net
VERSION="make_exif-name.sh Version 0.0.2 from 23.10.2005"
#
# Input:	comment text
# Output:	changed files
#
# Changes:
#	0.0.2:		comment as parameter from commandline
#	0.0.1:		generation
#

COMMENTSTEXT=$*
JPEGFILEFILTER=*.jpg

# trap is executed if script breaks
trap "echo '*** TRAP ***' ; exit" ERR

# check if command exists else break
which exiftran > /dev/null || echo "exiftran not found!" || exit;

echo "Write Comment: <"${COMMENTSTEXT}">"
# for each file in JPEGFILEFILTER do
# 	exiftran - transform digital camera jpeg images and use the libexif-Library
#		-i				Enable  inplace  editing of the images.
#		-b				Create a backup file when doing inplace editing.
#		-p				Preserve timestamps (atime + mtime) when doing inplace editing.
#		-c <text>		Set jpeg comment tag to <text>.
find . -type f -name "${JPEGFILEFILTER}" -exec exiftran -ibp -c "${COMMENTSTEXT}" {} \;