disk-utils/isosize.8

   1 .TH ISOSIZE 8 "June 2011" "util-linux" "System Administration"
   2 .SH NAME
   3 isosize \- output the length of an iso9660 filesystem
   4 .SH SYNOPSIS
   5 .B isosize
   6 .RI [options] " iso9660_image_file"
   7 .SH DESCRIPTION
   8 .PP
   9 This command outputs the length of an iso9660 filesystem that
  10 is contained in the specified file.  This file may be a normal file or
  11 a block device (e.g.\& /dev/hdd or /dev/sr0).  In the absence of
  12 any options (and errors), it will output the size of the iso9660
  13 filesystem in bytes.  This can now be a large number (>> 4\ GB).
  14 .SH OPTIONS
  15 .TP
  16 .BR \-x , " \-\-sectors"
  17 Show the block count and block size in human-readable form.
  18 The output uses the term "sectors" for "blocks".
  19 .TP
  20 .BR \-d , " \-\-divisor " \fInumber\fR
  21 Only has an effect when
  22 .B \-x
  23 is not given.  The value shown (if no errors)
  24 is the iso9660 file size in bytes divided by
  25 .IR number .
  26 So if
  27 .I number
  28 is the block size then the shown value will be the block count.
  29 .PP
  30 The size of the file (or block device) holding an iso9660
  31 filesystem can be marginally larger than the actual size of the
  32 iso9660 filesystem.  One reason for this is that cd writers
  33 are allowed to add "run out" sectors at the end of an iso9660
  34 image.
  35 .SH "EXIT STATUS"
  36 .RS
  37 .PD 0
  38 .TP
  39 .B 0
  40 success
  41 .TP
  42 .B 1
  43 generic failure, such as invalid usage
  44 .TP
  45 .B 32
  46 all failed
  47 .TP
  48 .B 64
  49 some failed
  50 .PD
  51 .RE
  52 .SH AVAILABILITY
  53 The isosize command is part of the util-linux package and is available from
  54 .UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
  55 Linux Kernel Archive
  56 .UE .