gistfile1.rb

module God
  module System
    class Process
      # Return true if this process is running, false otherwise 
      def exists?
        !!::Process.kill(0, @pid) rescue false
      end
  end 
end

# O'RLY?
# But it will return false for root processes!11

def Process.alive?(pid)
  Process.kill(0, pid)
rescue Errno::ESRCH
  false
rescue Errno::EPERM
  true
end

# Please, oh please be explicit with your exception handling.