From: Erik Hollensbe <erik@...>
Date: 2008-08-25T22:56:20+09:00
Subject: Re: Open file, get first line, delete first line close file

Rob Biedenharn wrote:

> I had some Perl code (lifted from some forum or article) that would
> cut initial lines out of a log file using sysread/syswrite with a
> truncate to reset the end-of-file.  I don't recall if it used a single
> file descriptor or two separate ones, but the idea is the same -- move
> bytes "backward" across the gap that you want to eliminate.  I agree
> with your "worst possible scenario for I/O" assessment.

You are talking about `tail -f`. This is different.

(And if you ever need to find that again, perldoc -q tail).

-Erik
-- 
Posted via http://www.ruby-forum.com/.