On May 15, 2008, at 4:09 PM, Mark Dodwell wrote:

> Hi,
>
> I need to create an empty (or at least garbage) file of a certain  
> size.
> I'm doing it the way below, but it is rather slow -- any ideas on a
> quicker way?
>
>  File.open("tmp.txt", 'w') { |f| 10.megabytes.times { f.write "a" } }
>
> Thanks!
>
> ~ Mark

fd.truncate( 2 ** 20 )

a @ http://codeforpeople.com/
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