Hi,

First of all, don't assume that you could open the file, check for it. Then use 3 argument open, and don't use a typeglob.

open my $fh, '>', $filename or die "Can't open $filename: $!";
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The solution provided will leave the default handler to be *FH, which is not desired, meaning all prints, etc will use *FH; alternatives:

# not so maintainable, but still used frequently
select((select($fh), $|++)[0]);

# better
use IO::Handle;
$fh->autoflush(1);
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Check out the link about buffering provided...

Regards,