#!/usr/bin/ruby

# Gentoo Portage check for Nagios
# Copyright (C) 2005  Christoph A. Mueller (chris@christophm.de)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as 
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA


# Version 0.1


emergeOutput = `emerge -uDp world 2>&1`

emergeOutputList = emergeOutput.split("\n")

if emergeOutputList.size < 5
  puts "The system is up to date."
  exit 0
else
  puts "There are updates for the system: " + emergeOutputList[4..emergeOutputList.size].join(", ")
  exit 2
end