40 lines
1.3 KiB
Groff
40 lines
1.3 KiB
Groff
.TH ISOSIZE 8 "June 2011" "util-linux" "System Administration"
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.SH NAME
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isosize \- output the length of an iso9660 filesystem
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.SH SYNOPSIS
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.B isosize
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.RI [options] " iso9660_image_file"
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.SH DESCRIPTION
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.PP
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This command outputs the length of an iso9660 filesystem that
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is contained in the specified file. This file may be a normal file or
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a block device (e.g.\& /dev/hdd or /dev/sr0). In the absence of
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any options (and errors), it will output the size of the iso9660
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filesystem in bytes. This can now be a large number (>> 4\ GB).
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.SH OPTIONS
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.TP
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.BR \-x , " \-\-sectors"
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Show the block count and block size in human-readable form.
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The output uses the term "sectors" for "blocks".
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.TP
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.BR \-d , " \-\-divisor " \fInumber\fR
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Only has an effect when
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.B \-x
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is not given. The value shown (if no errors)
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is the iso9660 file size in bytes divided by
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.IR number .
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So if
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.I number
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is the block size then the shown value will be the block count.
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.PP
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The size of the file (or block device) holding an iso9660
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filesystem can be marginally larger than the actual size of the
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iso9660 filesystem. One reason for this is that cd writers
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are allowed to add "run out" sectors at the end of an iso9660
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image.
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.SH AVAILABILITY
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The isosize command is part of the util-linux package and is available from
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.UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
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Linux Kernel Archive
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.UE .
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