epinfo - extract technical information from digital camera generated
epinfo [-h] [-V] [-z] [-r] [-t] [-f fmt] [-T <TagName>] <filename> ...
This command extracts the contents of TIFF directory of Exif files or
APP12 marker from JFIF files, parses it and optionaly finds specific
data inside it. If used without -T, -r and -t options, dumps the
complete block data in human readable format. With -r and -t options,
renames and changes timestamp of the files.
-h This option produces a help screen of all options and commands.
-V This option prints software revision information.
-z This option sets no time-zone processing mode. Use this option if
the camera’s clock is set up shifted by the local timezone offset
(as it is when you set it manually to the local time).
-r Rename files, generating new name based on the time of snapshot
and -f option value.
-t Set timestamp of the files to the time of snapshots.
This option allows to specify the format for automatically
generated image file names; the value is used as the format string
for strftime(3) function. By default, names of the format
"MMDD_NNN.jpg" are generated, where MM is a month, DD is a day,
and NNN is a count starting from 001. A good starting point for
the timeformat value could be "%Y_%m_%d-%H_%M_%S.jpg". If the
format string contains context "%%XXXd" where XXX are digits, it
is taken for the count, i.e. if the file with such name is
present, next count is tried. If the format string does not
contain "%%XXXd" part, the count field, if necessary, is appended
at the end of the name.
A few single-character formats are used as shortcuts. "x" makes
the name of seconds since the epoch in hexadecimal format (8
characters + ".jpg"), "d" - the same in decimal format (10
characters), "1" stands for default format "%m%d_%%03d.jpg", "2"
stands for "%y%m%d%%02d.jpg", "3" stands for
"%Y_%m_%d-%H_%M_%S.jpg" and 4 stands for "%Y/%m/%d/%H_%M_%S.jpg".
The program attempts to create intermediate directories is
necessary (and possible).
Output the value of this keyword in the information block. Note
that keywords are case sensitive. TagName DateTime has special
meaning: if the file is Exif, it just prints the value of DateTime
tag, and if the format is old APP12, it outputs the value of
TimeDate tag in the same format as Exif DateTime.
List of filenames to process.
% epinfo -f3 -rt pic00001.jpg
% epinfo -T FNumber 0512_003.jpg
The latest version of this tool can be found at
ftp://ftp.average.org/pub/photopc/; see also WWW page at
Trademarks are properties of their respective owners.
The program is copyrighted by Eugene G. Crosser <firstname.lastname@example.org>
and freely distributable. See README file for details.