Am 06.08.2010 um 19:28 schrieb Rex Couture:

> 	If I were writing it, I would read the file line by line.  If the  
> line meets the criterion for saving, write it to a new output  
> file.  Clean up the files as desired.  I think this is essentially  
> what Doug Danforth was suggesting.  You can't beat the program for  
> simplicity, safety, or low memory use.
>
> 	Reading and writing to the same file obviously entails a lot of  
> complication and fancy programming, and you hope everything goes  
> well.  In your case it did not go well.
>
> Rex Couture
>
>
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