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jpeginfo - Prints information and tests integrity of JPEG/JFIF files…  more info»

jpeginfo.1.gz

JPEGINFO(1)                                              JPEGINFO(1)



NAME
       jpeginfo   -   prints  information  and  tests  integrity  of
       JPEG/JFIF files.


SYNOPSIS
       jpeginfo [ options ] [ filenames ]


DESCRIPTION
       jpeginfo is used to generate  informative  listings  of  jpeg
       files,  and also to check jpeg files for errors. Program also
       supports automatic deletion of broken jpegs.



OPTIONS
       Options may  be  either  the  traditional  POSIX  one  letter
       options,  or the GNU style long options.  POSIX style options
       start with a single ``-'', while GNU long options start  with
       ``--''.

       Options offered by jpeginfo are the following:

       -c, --check
             Check  files  also for errors. (default is just to read
             the headers).

       -C, --comments
             Display file comments (from COM markers).

       -d, --delete
             Delete files that  have  errors.  (default  is  not  to
             delete any files).

       -f<filename>, --file<filename>
             Read filenames to process from given file. To use stan‐
             dard input (stdin) use  '-'  as  a  filename.  This  is
             alternative  to  default  where  filenames are given as
             parameters to the program.

       -h, --help
             Display short usage information and exits.

       -5, --md5
             Calculates MD5 checksum for each file.

       -i, --info
             Displays even  more  information  about  each  picture.
             Prints  image  coding (Huffman/Arithmetic), density (in
             dpi/dpc), and whether CCIR601 sampling was used or not.

       -l, --lsstyle
             Uses alternate listing format (ls -l style).

       -v, --verbose
             Enables verbose mode (positively chatty).

       --version
             Displays program version.

       -q, --quiet
             Quiet mode, output just the jpeg infos.

       -m<mode>, --mode=<mode>
             Sets the delete mode, meaningful only when used with -d
             flag.  Mode can be one of the following:

             all    files  containing  any  type of errors/warnings,
                    not   necessarily   preventing   the   decoding.
                    (default)

             erronly
                    only  files  with  serious errors (ie. cannot be
                    decoded at all).



BUGS
       None, so far :-)


SEE ALSO
       jpegoptim(1)


AUTHOR
       Timo Kokkonen (tjko@jyu.fi)


COPYING
       Copyright (C) 1996-1998  Timo Kokkonen

       This program is free software; you can redistribute it and/or
       modify  it  under the terms of the GNU General Public License
       as published by the Free Software Foundation; either  version
       2 of the License, or (at your option) any later version.
        This program is distributed in the hope that it will be use‐
       ful, but WITHOUT ANY WARRANTY; without even the implied  war‐
       ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       See the GNU General Public License for more details.
        You should have received a copy of the  GNU  General  Public
       License  along  with  this program; if not, write to the Free
       Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
       USA.



4th Berkeley Distribution    10 Dec 2002                 JPEGINFO(1)
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