ISOINFO(8)ISOINFO(8)NAME
devdump, isoinfo, isovfy, isodump - Utility programs for dumping and
verifying iso9660 images.
SYNOPSIS
devdump isoimage
isodump isoimage
isoinfo [ -h ] [ -R ] [ -J ] [ -f ] [ -l ] [ -p ] [ -T sector ] [ -N
sector ] [ -i isoimage ] [ -x path ]
isovfy isoimage
DESCRIPTION
devdump is a crude utility to interactively display the contents of
device or filesystem images. The initial screen is a display of the
first 256 bytes of the first 2048 byte sector. The commands are the
same as with isodump.
isodump is a crude utility to interactively display the contents of
iso9660 images in order to verify directory integrity. The initial
screen is a display of the first part of the root directory, and the
prompt shows you the extent number and offset in the extent.
You can use the 'a' and 'b' commands to move backwards and for‐
wards within the image. The 'g' command allows you to goto an
arbitrary extent, and the 'f' command specifies a search string
to be used. The '+' command searches forward for the next
instance of the search string, and the 'q' command exits devdump
or isodump.
isoinfo is a utility to perform directory like listings of iso9660
images.
isovfy is a utility to verify the integrity of an iso9660 image. Most
of the tests in isovfy were added after bugs were discovered in early
versions of mkisofs. It isn't all that clear how useful this is any‐
more, but it doesn't hurt to have this around.
OPTIONS
Only the isoinfo program has any command line options. These are:
-h print a summary of all options.
-f generate output as if a 'find . -print' command had been run on
the iso9660 image. You should not use the -l image with the -f
option.
-i iso_image
Specifies the path of the iso9660 image that we wish to examine.
-l generate output as if a 'ls -lR' command had been run on the
iso9660 image. You should not use the -f image with the -l
option.
-N sector
Quick hack to help examine single session disc files that are to
be written to a multi-session disc. The sector number specified
is the sector number at which the iso9660 image should be writ‐
ten when send to the cd-writer. Not used for the first session
on the disc.
-p Print path table information.
-R Extract information from Rock Ridge extensions (if present) for
permissions, file names and ownerships.
-J Extract information from Joliet extensions (if present) for file
names.
-T sector
Quick hack to help examine multi-session images that have
already been burned to a multi-session disc. The sector number
specified is the sector number for the start of the session we
wish to display.
-x pathname
Extract specified file to stdout.
AUTHOR
Eric Youngdale <ericy@gnu.ai.mit.edu> or <eric@andante.jic.com> is to
blame for these shoddy hacks. Patches to improve general usability
would be gladly accepted.
BUGS
The user interface really sucks.
FUTURE IMPROVEMENTS
These utilities are really quick hacks, which are very useful for
debugging problems in mkisofs or in an iso9660 filesystem. In the long
run, it would be nice to have a daemon that would NFS export a iso9660
image.
The isoinfo program is probably the program that is of the most use to
the general user.
AVAILABILITY
These utilities come with the mkisofs package, and the primary ftp site
is tsx-11.mit.edu in /pub/linux/BETA/cdrom/mkisofs and many other mir‐
ror sites. Despite the name, the software is not beta.
SEE ALSOmkisofs(8)Version 1.12b5 23 Feb 1997 ISOINFO(8)
