From: Tim Hunter <TimHunter@...>
Date: 2008-12-21T01:14:08+09:00
Subject: Re: get first and last line from txt file - how?

Yaser Sulaiman wrote:
> On Sat, Dec 20, 2008 at 6:54 PM, Ch Ba <navouri@gmail.com> wrote:
>>  It would work the same? Or do you mean without loading up the entire
>> file?
> 
> Yep, that is exactly what I mean.
> 

If you know where the last line starts (that is, the byte offset of the 
first character in the last line) then you could use IO#seek to seek to 
that offset and then read.

How do you know where the last line starts? When you write the file, 
call IO#tell to get the current byte offset before you write the last line.

-- 
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