INTRODUCTION
------------

exif_touch is a perl script to set the "modified date" of a file (or a
directory of files) to match the "image creation" date information in the exif
headers.  This can be useful in allowing image browsing software to sort images
images according to when they were shot, instead of when they were last
modified.


INSTALLATION
------------

Simply chmod exif_touch to be executable.  If you use exif_time often, you may
wish to copy it to a central location like /usr/local/bin.

exif_touch relies on two external programs: "touch" and "exiftime".  "touch"
should be included in any Linux distribution.  "exiftime" is part of the
"exiftags" package and is available at http://johnst.org/sw/exiftags/.


USAGE
-----

There are only two modes of usage, operation on a single file and operation on
a directory of files:

 set_photo_date.pl -f filename
 set_photo_date.pl -d /directory/of-files/to-process/


KNOWN BUGS
----------

exif_time is not robust.  I am not a strong programmer, I threw it together in
an afternoon, and I'm sure it contains many bugs.  It may eat your photo
collection.  I use it periodically on my collection of several hundred images
without problems, but as always your mileage may vary.  Please contact
mpl22@cornell.edu with bug reports or code contributions.
