1ISOSIZE(8)                   System Administration                  ISOSIZE(8)
2
3
4

NAME

6       isosize - output the length of an iso9660 filesystem
7

SYNOPSIS

9       isosize [options] iso9660_image_file
10

DESCRIPTION

12       This  command  outputs the length of an iso9660 filesystem that is con‐
13       tained in the specified file.  This file may be  a  normal  file  or  a
14       block  device  (e.g.  /dev/hdd  or  /dev/sr0).   In  the absence of any
15       options (and errors), it will output the size of the iso9660 filesystem
16       in bytes.  This can now be a large number (>> 4 GB).
17

OPTIONS

19       -x, --sectors
20              Show the block count and block size in human-readable form.  The
21              output uses the term "sectors" for "blocks".
22
23       -d, --divisor number
24              Only has an effect when -x is not given.  The value shown (if no
25              errors) is the iso9660 file size in bytes divided by number.  So
26              if number is the block size then the shown  value  will  be  the
27              block count.
28
29       The  size  of  the file (or block device) holding an iso9660 filesystem
30       can be marginally larger than the actual size of the  iso9660  filesys‐
31       tem.   One  reason  for this is that cd writers are allowed to add "run
32       out" sectors at the end of an iso9660 image.
33

EXIT STATUS

35              0      success
36              1      generic failure, such as invalid usage
37              32     all failed
38              64     some failed
39

AVAILABILITY

41       The isosize command is part of the util-linux package and is  available
42       from Linux Kernel Archive ⟨https://www.kernel.org/pub/linux/utils/util-
43       linux/⟩.
44
45
46
47util-linux                         June 2011                        ISOSIZE(8)