04-21-2008
U can use bc for calculation
echo "scale=2; $a / $b" | bc
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LEARN ABOUT DEBIAN
format::human::bytes
Format::Human::Bytes(3pm) User Contributed Perl Documentation Format::Human::Bytes(3pm)
NAME
Format::Human::Bytes - Format a bytecount and make it human readable
VERSION
Version 0.05
SYNOPSIS
Ever showed 12345678 bytes to the user instead of just saying 11MB? This module returns you a printable string which is more readable by
humans than a simple bytecount.
use Format::Human::Bytes;
$readable = Format::Human::Bytes::base2($bytecount[,$decimals]);
$readable = Format::Human::Bytes::base10($bytecount[,$decimals]);
$readable = Format::Human::Bytes->base2($bytecount[,$decimals]);
$readable = Format::Human::Bytes->base10($bytecount[,$decimals]);
my $fhb = Format::Human::Bytes->new();
$readable = $fhb->base2($bytecount[,$decimals]);
$readable = $fhb->base10($bytecount[,$decimals]);
All functions do "intelligent" switching to the next unit, for example:
1000 => 1000B
[...]
8000 => 8000B
9000 => 9kB
The difference between 1000 bytes and 1500 bytes is usually bigger (for example because of a slow link) than between 95kB and 95,5kB. The
same applies to 8000kB vs. 9 MB and for the other units.
Depending on your usage, you may want to specify how many decimals should be shown (defaults to no decimals).
FUNCTIONS
/ METHODS
new
my $fhb = Format::Human::Bytes->new();
Creates and returns a Format::Human::Bytes - object.
base2
Callable as a function:
$readable = Format::Human::Bytes::base2($bytecount[,$decimals]);
Callable as a class method:
$readable = Format::Human::Bytes->base2($bytecount[,$decimals]);
Callable as a object method:
$readable = $fhb->base2($bytecount[,$decimals]);
Returns the correct readable form of the given bytecount.
Correct in this case means that 1kB are 1024 Bytes which is how computers see the world.
If you specify a decimal parameter, the result number will have the number of decimal numbers you specified.
base10
Callable as a function:
$readable = Format::Human::Bytes::base10($bytecount[,$decimals]);
Callable as a class method:
$readable = Format::Human::Bytes->base10($bytecount[,$decimals]);
Callable as a object method:
$readable = $fhb->base10($bytecount[,$decimals]);
Returns the incorrect readable form of the given bytecount.
Incorrect in this case means that 1kB is 1000 Bytes and 1 MB is 1000000 bytes which is how some (many) people see the world, but it's wrong
for computers.
If you specify a decimal parameter, the result number will have the number of decimal numbers you specified.
AUTHOR
Sebastian Willing, "<sewi at cpan.org>"
BUGS
Please report any bugs or feature requests to "bug-format-human-bytes at rt.cpan.org", or through the web interface at
<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Format-Human-Bytes>. I will be notified, and then you'll automatically be notified of
progress on your bug as I make changes.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Format::Human::Bytes
You can also look for information at:
o RT: CPAN's request tracker
<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Format-Human-Bytes>
o AnnoCPAN: Annotated CPAN documentation
<http://annocpan.org/dist/Format-Human-Bytes>
o CPAN Ratings
<http://cpanratings.perl.org/d/Format-Human-Bytes>
o Search CPAN
<http://search.cpan.org/dist/Format-Human-Bytes/>
HISTORY
The functions are in use since late 2003 or early 2004 but I didn't pack them for CPAN before 2009.
LICENSE
This program is free software; you can redistribute it and/or modify it under the same terms as Perl 5 itself.
perl v5.10.1 2010-04-08 Format::Human::Bytes(3pm)