From: Gregory Seidman <gsslist+ruby@...>
Date: 2007-11-19T23:49:27+09:00
Subject: Re: Read last line of a file

On Mon, Nov 19, 2007 at 11:38:08PM +0900, Shuaib Zahda wrote:
> Hi all
> 
> I was trying to find a method to read only the last line of a file. I
> checked the the documentation and there is no such method.
> Beside reading line after line and checking the the eof method. Is there
> any faster or shorter way to do that.

Depending on your platform, you might find that using popen with tail -1
will be the fastest and easiest way. Failing that, consider this:

last = File.open(myfile) { |f| f.extend(Enumerable).inject { |_,ln| ln } }

> Regards
--Greg