jpeginfo(1)

1JPEGINFO(1)                 General Commands Manual                JPEGINFO(1)
2
3
4

NAME

6       jpeginfo - prints information and tests integrity of JPEG/JFIF files.
7
8

SYNOPSIS

10       jpeginfo [ options ] [ filenames ]
11
12

DESCRIPTION

14       jpeginfo  is  used  to generate informative listings of jpeg files, and
15       also to check jpeg files for errors. Program  also  supports  automatic
16       deletion of broken jpegs.
17
18
19

OPTIONS

21       Options  may be either the traditional POSIX one letter options, or the
22       GNU style long options.  POSIX style options start with a single ``-'',
23       while GNU long options start with ``--''.
24
25       Options offered by jpeginfo are the following:
26
27       -c, --check
28             Check  files  also for errors. (default is just to read the head‐
29             ers).
30
31       -C, --comments
32             Display file comments (from COM markers).
33
34       -d, --delete
35             Delete files that have errors. (default  is  not  to  delete  any
36             files).
37
38       -f<filename>, --file<filename>
39             Read  filenames to process from given file. To use standard input
40             (stdin) use '-' as a filename. This  is  alternative  to  default
41             where filenames are given as parameters to the program.
42
43       -h, --help
44             Display short usage information and exits.
45
46       -5, --md5
47             Calculates MD5 checksum for each file.
48
49       -i, --info
50             Displays  even  more information about each picture. Prints image
51             coding (Huffman/Arithmetic), density (in  dpi/dpc),  and  whether
52             CCIR601 sampling was used or not.
53
54       -l, --lsstyle
55             Uses alternate listing format (ls -l style).
56
57       -v, --verbose
58             Enables verbose mode (positively chatty).
59
60       --version
61             Displays program version.
62
63       -q, --quiet
64             Quiet mode, output just the jpeg infos.
65
66       -m<mode>, --mode=<mode>
67             Sets  the  delete  mode,  meaningful only when used with -d flag.
68             Mode can be one of the following:
69
70             all    files containing any type of errors/warnings, not  nesses‐
71                    sary preventing the decoding. (default)
72
73             erronly
74                    only  files  with serious errors (ie. cannot be decoded at
75                    all).
76
77
78

BUGS

80       None, so far :-)
81
82

AUTHOR

88       Timo Kokkonen (tjko@jyu.fi)
89
90

COPYING

92       Copyright (C) 1996-1998  Timo Kokkonen
93
94       This program is free software; you can redistribute it and/or modify it
95       under  the  terms of the GNU General Public License as published by the
96       Free Software Foundation; either version 2 of the License, or (at  your
97       option) any later version.
98        This  program  is  distributed in the hope that it will be useful, but
99       WITHOUT ANY  WARRANTY;  without  even  the  implied  warranty  of  MER‐
100       CHANTABILITY  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
101       Public License for more details.
102        You should have received a copy of  the  GNU  General  Public  License
103       along with this program; if not, write to the Free Software Foundation,
104       Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
105
106
107
1084th Berkeley Distribution         10 Dec 2002                      JPEGINFO(1)