From: Reid Thompson <jreidthompson@...>
Date: 2008-09-05T21:28:14+09:00
Subject: Re: How do I quickly search the end of a huge text file?

Brian Green wrote:
> Thank you very much!! That's exactly what I was looking for!
> 
> I just added
> 
> file.seek(-2000,IO::SEEK_END)
> 
> right after the line
> 
> fileSize = File.size(fileName)
> 

50 megabytes = 52 428 800 bytes
5% = 52428800 * .05 = 2621440
2621440 != 2000

perhaps:
fileSize = File.size(fileName)
seeklen = ((0.05 * fileSize) * -1).to_i
file = File.open(ARGV[0)
file.seek(seeklen, IO::SEEK_END)
puts file.readlines
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