added snmp extend script for os-updates application

snmp/os-updates.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+################################################################
+# copy this script to somewhere like /opt and make chmod +x it #
+# edit your snmpd.conf and include                             #
+# extend osupdate /opt/os-updates.sh                           #
+# restart snmpd and activate the app for desired host          #
+################################################################ 
+BIN_AWK='/usr/bin/awk'
+BIN_WC='/usr/bin/wc'
+CMD_WC='-l'
+BIN_ZYPPER='/usr/bin/zypper'
+CMD_ZYPPER='lu'
+BIN_YUM='/usr/bin/yum'
+CMD_YUM='check-update'
+BIN_APT='/usr/bin/apt'
+CMD_APT='list --upgradable'
+
+#general check for os based on /etc/os-release
+if [ -f /etc/os-release ]; then
+	OS=`$BIN_AWK -F= '/^ID=/{print $2}' /etc/os-release`
+	if [ $OS == "opensuse" ]; then
+		UPDATES=`$BIN_ZYPPER $CMD_ZYPPER | $BIN_WC $CMD_WC`
+		if [ $UPDATES -gt 3 ]; then
+			echo $(($UPDATES-3));
+		else
+			echo "0";
+		fi
+	elif [ $OS == "\"centos\"" ]; then
+		UPDATES=`$BIN_YUM $CMD_YUM | $BIN_WC $CMD_WC`
+		if [ $UPDATES -gt 6 ]; then
+			echo $(($UPDATES-6));
+		else
+			echo "0";
+		fi
+	elif [ $OS == "ubuntu" ]; then
+		UPDATES=`$BIN_APT $CMD_APT | $BIN_WC $CMD_WC`
+		if [ $UPDATES -gt 1 ]; then
+			echo $(($UPDATES-1));
+		else
+			echo "0";
+		fi
+	fi
+else
+	echo "0";
+fi