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ISOSIZE(8)                                      System Administration                                      ISOSIZE(8)



NAME
       isosize - output the length of an iso9660 filesystem

SYNOPSIS
       isosize [options] iso9660_image_file

DESCRIPTION
       This  command  outputs the length of an iso9660 filesystem that is contained in the specified file.  This file
       may be a normal file or a block device (e.g. /dev/hdd or /dev/sr0).   In  the  absence  of  any  options  (and
       errors),  it  will  output  the size of the iso9660 filesystem in bytes.  This can now be a large number (>> 4
       GB).

OPTIONS
       -x, --sectors
              Show the block count and block size in human-readable form.  The output uses  the  term  "sectors"  for
              "blocks".

       -d, --divisor number
              Only  has  an  effect when -x is not given.  The value shown (if no errors) is the iso9660 file size in
              bytes divided by number.  So if number is the block size then the shown value will be the block count.

       The size of the file (or block device) holding an iso9660 filesystem can be marginally larger than the  actual
       size  of  the iso9660 filesystem.  One reason for this is that cd writers are allowed to add "run out" sectors
       at the end of an iso9660 image.

AVAILABILITY
       The isosize command is part of the util-linux package and is  available  from  Linux  Kernel  Archive  ⟨ftp://
       ftp.kernel.org/pub/linux/utils/util-linux/⟩.



util-linux                                            June 2011                                            ISOSIZE(8)