From: Jesse Merriman <jesse.d.merriman@...>
Date: 2008-08-26T06:40:57+09:00
Subject: Re: [QUIZ] Uptime Since... (#174)

Here's a one-liner using /proc/uptime:

puts Time.now - File.read('/proc/uptime').match(/^(\d+\.\d+) /)[1].to_f

--
Jesse Merriman