If you know the record length and can calculate file offsets, you can use a combination of seek and syswrite to overwrite chunks of a file. Of course, since it's unbuffered and print is buffered, you can really get tied up in knots.

I'd just check the time before you print. It's a lot easier.

In reply to (chromatic) Re: Deleting a line from a file by chromatic
in thread Deleting a line from a file by Anonymous Monk

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