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  sec-
     tor ] [ -N sector ] [ -i isoimage ] [ -x path ]

     isovfy isoimage

DESCRIPTION

     devdump is a crude utility to interactively display the con-
     tents of device or filesystem images.  The initial screen is
     a display of the first 256 bytes of the first 2048 byte sec-
     tor.  The commands are the same as with isodump.

     isodump is a crude utility to interactively display the con-
     tents  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  forwards  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 anymore, 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 written 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  use-
     ful  for  debugging  problems  in  mkisofs  or in an iso9660
     filesystem. In the long run, it would be nice to have a dae-
     mon 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  mirror  sites.
     Despite the name, the software is not beta.

SEE ALSO

     mkisofs(8)