epinfo - extract technical information from digital camera
       generated files


       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

       -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.

       -f timeformat
            This option allows to specify the format for automat-
            ically  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 gen-
            erated, 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 con-
            tains 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

            A few single-character formats are used as shortcuts.
            "x" makes the name of seconds since the epoch in hex-
            adecimal  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

       -T <TagName>
            Output the value of this keyword in  the  information
            block.   Note that keywords are case sensitive.  Tag-
            Name 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.


       <filename> ...
            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
       <crosser@average.org>  and  freely   distributable.    See
       README file for details.



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