jpeginfo - prints information and tests integrity of JPEG/JFIF files.
jpeginfo [ options ] [ filenames ]
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 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:
Check files also for errors. (default is just to read the
Display file comments (from COM markers).
Delete files that have errors. (default is not to delete any
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.
Display short usage information and exits.
Calculates MD5 checksum for each file.
Displays even more information about each picture. Prints image
coding (Huffman/Arithmetic), density (in dpi/dpc), and whether
CCIR601 sampling was used or not.
Uses alternate listing format (ls -l style).
Enables verbose mode (positively chatty).
Displays program version.
Quiet mode, output just the jpeg infos.
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)
only files with serious errors (ie. cannot be decoded at
None, so far :-)
Timo Kokkonen (firstname.lastname@example.org)
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.