WOW! We've got some "industrial strength" stuff in other posts! I just hacked out something fairly "stupid" that does "MB math". So this is the "dumb" version!
#!usr/bin/perl -w
use strict;
my %scale= (MB => 1,
GB => 1000,
KB => 0.001);
sub scale2MB
{
my $string = shift;
$string =~ tr/a-z/A-Z/;
if ($string =~ /^[\d.]+$/){return $string};
my ($num,$suffix) = ($string =~ /^([\d.]+)\s*(\w+)/);
return ($num * $scale{$suffix});
}
foreach ("10", "10.5", "10 GB", "1kb", "10.1 GB")
{
print "$_=",scale2MB($_),"\n";
}
my $val = scale2MB("753mb") + scale2MB("50 kb");
print "753MB+50KB is: $val\n";
__END__
prints
10=10
10.5=10.5
10 GB=10000
1kb=0.001
10.1 GB=10100
753MB+50KB is: 753.05
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