Removing directories older than x days old

Hi, I am trying to write a script that will remove directories that are
older than 5 days old.  I can't seem to get the datetime for the
directory to be usable for comparison.

require 'fileutils'

class CleanupDirs
  def cleanup()
    Dir.foreach("/mydir/") do |entry|
      puts entry
      etime = File.stat(entry)
      vAgeInDays = ageInDays( etime.ctime )
      if vAgeInDays > 5
        Dir.delete(entry)

      end
    end
  end

  def ageInDays(days)
    ydate = Time.new
    ydate = ydate - ( 24 * 60 * 60 * days)
    return ydate
  end
end

CleanupDirs.new.cleanup

I keep getting the error  Time can't be coerced into Fixnum (TypeError).

Can someone point out what I am doing wrong?

TIA

-- 
Posted via http://www.ruby-forum.com/.