- List all the files included in an ISO image:isoinfo -f -i [path/to/image.iso]- E[x]tract a specific file from an ISO image and send it out stdout:isoinfo -i [path/to/image.iso] -x [/PATH/TO/FILE/INSIDE/ISO.EXT]- Show header information for an ISO disk image:isoinfo -d -i [path/to/image.iso]
isoinfo [ -d ] [ -h ] [ -R ] [ -J ] [ -j charset ] [ -f ] [ -l ] [ -p ] [ -T sector ] [ -N sector ] [ -i isoimage ] [ -x path ]
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 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 genisoimage. It isn't all that clear how useful this is anymore, but it doesn't hurt to have this around.
The options common to all programs are -help,-h,-version, i=name,dev=name. The isoinfo program has additional command line options. The options are:
On Linux, drives connected to a parallel port adapter are mapped to a virtual SCSI bus. Different adapters are mapped to different targets on this virtual SCSI bus.
If no dev option is present, the program will try to get the device from the CDR_DEVICE environment.
If the argument to the dev= option does not contain the characters ',', '/', '@' or ':', it is interpreted as an label name that may be found in the file /etc/wodim.conf (see FILES section).
The options -i and dev=target are mutual exclusive.
The author of the original sources (1993 ... 1998) is Eric Youngdale <email@example.com> or <firstname.lastname@example.org> is to blame for these shoddy hacks. Joerg Schilling wrote the SCSI transport library and its adaptation layer to the programs and newer parts (starting from 1999) of the utilities, this makes them Copyright (C) 1999-2004 Joerg Schilling. Patches to improve general usability would be gladly accepted.
This manpage describes the program implementation of isoinfo as shipped by the cdrkit distribution. See http://alioth.debian.org/projects/debburn/ for details. It is a spinoff from the original program distributed in the cdrtools package . However, the cdrtools developers are not involved in the development of this spinoff and therefore shall not be made responsible for any problem caused by it. Do not try to get support for this program by contacting the original author(s).
If you have support questions, send them to
If you have definitely found a bug, send a mail to this list or to
writing at least a short description into the Subject and "Package: cdrkit" into the first line of the mail body.
The user interface really sucks.
These utilities are really quick hacks, which are very useful for debugging problems in genisoimage 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.
These utilities come with the cdrkit package, and the primary download site is http://debburn.alioth.debian.org/ and FTP mirrors of distributions. Despite the name, the software is not beta.
Note that this forces the program to create a pipe to the rsh(1) program and disallows the program to directly access the network socket to the remote server. This makes it impossible to set up performance parameters and slows down the connection compared to a root initiated rcmd(3) connection.
Each line that follows a label contains a TAB separated list of items. Currently, four items are recognized: the SCSI ID of the drive, the default speed that should be used for this drive, the default FIFO size that should be used for this drive and drive specific options. The values for speed and fifosize may be set to -1 to tell the program to use the global defaults. The value for driveropts may be set to "" if no driveropts are used. A typical line may look this way:
This tells the program that a drive named teac1 is at scsibus 0, target 5, lun 0 and should be used with speed 4 and a FIFO size of 8 MB. A second drive may be found at scsibus 1, target 6, lun 0 and uses the default speed and the default FIFO size.
genisoimage(1), wodim(1), readcd(1), ssh(1).
 Cdrtools 2.01.01a08 from May 2006, http://cdrecord.berlios.de