DragonFly On-Line Manual Pages

JPEGINFO(1)            DragonFly General Commands Manual           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 standard 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
                    nessessary 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 useful, but
       WITHOUT ANY WARRANTY; without even the implied warranty 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)