Here's a simple and efficient way: 

#! perl -slw
use strict;

my $ramfile;

open RAM, '>', \$ramfile;
seek RAM, 1024**3 - 1, 0;
print RAM chr(0);
close RAM;

printf "Check ram: "; <>;

undef $ramfile;

printf "Check ram: "; <>;

__END__
c:\test>GbRamFile.pl
Check ram: 1056792k
Check ram: 6168k

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Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
RIP an inspiration; A true Folk's Guy

In reply to Re: how to occupy 1G of memory by BrowserUk
in thread how to occupy 1G of memory by Anonymous Monk

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