detects OS versions

gistfile1.txt

class OsVersion
  attr_reader :ruby_platform, :os, :ident, :version, :build
  def initialize
    @ruby_platform = RUBY_PLATFORM
    if File.exists?("/proc/version")
      @os = :linux
      @ident = File.open("/proc/version").readlines.join
    elsif `sw_vers`.length != 0
      @os = :macosx
      @version = `sw_vers -productVersion`.chop!
      @build = `sw_vers -buildVersion`
    elsif @ruby_platform =~ /(win|w)32$/
      @os = :windows
    end
  end
end