#!/bin/bash
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# $Id: versions.sh 9132 2010-06-04 20:17:43Z manuel $ $HeadURL: svn://svn.lab.vmops.com/repos/vmdev/java/scripts/vm/hypervisor/versions.sh $
# Output Linux distribution.

REV=`uname -r`
MACH=`uname -m`
KERNEL=`uname -r`
DIST="Unknown Linux"
REV="X.Y"
CODENAME=""

function get_from_redhat_release {
	DIST=`cat /etc/redhat-release | awk -F 'release' '{print $1}'`
	CODENAME=`cat /etc/redhat-release | sed s/.*\(// | sed s/\)//`
	REV=`cat /etc/redhat-release | awk -F 'release' '{print $2}' | awk '{print $1}'`
}

function get_from_lsb_release {
	DIST=`cat /etc/lsb-release | grep DISTRIB_ID | tr "\n" ' '| sed s/.*=//`
	REV=`cat /etc/lsb-release | grep DISTRIB_RELEASE | tr "\n" ' '| sed s/.*=//`
	CODENAME=`cat /etc/lsb-release | grep DISTRIB_CODENAME | tr "\n" ' '| sed s/.*=//`
}

function get_from_os_release {
	DIST=`grep -e "^NAME=" /etc/os-release | awk -F\" '{print $2}'`
	REV=`grep -e "^VERSION_ID=" /etc/os-release | awk -F\" '{print $2}'`
	CODENAME=`grep -e "^PRETTY_NAME=" /etc/os-release | awk -F\" '{print $2}'`
}

if [ -f /etc/redhat-release ] ; then
	get_from_redhat_release
	if [ -z "$REV" ] && [ -f /etc/os-release ]; then
	    get_from_os_release
    fi
elif [ -f /etc/lsb-release ] ; then
	get_from_lsb_release
elif [ -f /etc/os-release ] ; then
	get_from_os_release
fi

echo Host.OS=${DIST}
echo Host.OS.Version=${REV}
echo Host.OS.Kernel.Version=${KERNEL}