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#!/bin/bash
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#!/bin/bash
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#
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#
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# Script that checks if given sites are up and sends an e-mail if they are not.
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# Script that checks if given sites are up and sends an e-mail if the are not.
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# You should not run this script on the same servers your monitoring,
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# You should not run this script on the same servers your monitoring,
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# neither should your e-mail account reside on a server behind same firewall as the sites your checking.
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# neither should your e-mail account reside on a server behind same firewall as the sites your checking.
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#
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#
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# Developer: oSource Development
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# Developer: oSource Development
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# DevTeam: Marcus Uddenhed
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# DevTeam: Marcus Uddenhed
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# Version: 0.5.0
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# Version: 0.6.1
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# Web: http://www.osource.se
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# Web: http://www.osource.se
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# Updated: 2017-08-31
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# Updated: 2017-10-30
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#
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#
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# Requires: mailx (http://heirloom.sourceforge.net/mailx.html)
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# Requires: heirloom-mailx (http://heirloom.sourceforge.net/mailx.html)
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#
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#
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# Licensed under BSDL license, see license information on our homepage.
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# Licensed under BSDL license, see license information on our homepage.
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#
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#
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#### Global variables ####
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#### Global variables ####
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# Sites
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# Sites
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checkSite[1]="https://";							# Add sites that you want to monitor, can be as many as you want.
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checkSite[1]="http://"						# Add sites that you want to monitor, can be as many as you want.
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checkSite[2]="http://";
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checkSite[2]="https://"
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# Retries
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# Retries
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rInterval=8											# How many times should it retry until it set the site as down.
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rInterval=8									# How many times should it retry until it set the site as down.
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rTime=20											# How many seconds shold it wait between retries.
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rTime=20									# How many seconds shold it wait between retries.
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# Mail
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# Mail
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sendMail=yes										# Should i send an e-mail with failed sites.
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sendMail=yes								# Should i send an e-mail with failed sites.
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mailFrom=""                                    		# From whom shall this mail be sent?
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mailFrom=""									# From whom shall this mail be sent?
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mailTo=""											# To whom shall the mail be sent? Seperate recipients with a ","
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mailTo=""									# To whom shall the mail be sent?
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smtpHost=""											# The SMTP mail server that is going to process the mail.
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smtpHost=""									# The SMTP mail server that is going to process the mail.
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smtpAuth=yes								# Does the SMTP mail server require authentication(yes/no).
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smtpAuth=yes										# Does the SMTP mail server require authentication(yes/no).
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smtpUser=""									# Username if smtpAuth is set to yes.
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smtpUser=""											# Username if smtpAuth is set to yes.
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smtpPass=""									# password if smtpAuth is set to yes.
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smtpPass=""											# password if smtpAuth is set to yes.
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smtpPort=587								# Standard for non authenticated SMTP is 25, 587 is for authenticated SMTP.
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smtpPort=587										# Standard for non authenticated SMTP is 25, 587 is for authenticated SMTP.
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mailBin="heirloom-mailx"					# executable file for mailx.
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# Logging
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# Logging
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logStatus=yes										# Should we log to local logfile(yes/no).
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logStatus=yes								# Should we log to local logfile(yes/no).
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logPath="/var/log"									# Where should we put the log file(omit the traling slash).
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logPath="/var/log"							# Where should we put the log file(omit the traling slash).
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logName="oSiteChecker.log"							# name of log file.
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logName="oSiteChecker.log"					# name of log file.
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#### Do not edit anything below unless you know what you are doing. ####
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#### Do not edit anything below unless you know what you are doing. ####
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check_sites() {
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check_sites() {
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        # Declare $is variable
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	# Declare $is variable
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        is=0
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	is=0
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        # Start control
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	# Start control
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        for i in "${checkSite[@]}"
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	for i in "${checkSite[@]}"
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        do
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	do
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                CURL=$(curl -s --head $i)
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		CURL=$(curl -s --head $i)
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                if echo $CURL | grep "200 OK" > /dev/null
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		if echo $CURL | grep "200 OK" > /dev/null
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                then
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		then
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                        # add entry to log file if logging enabled
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			# add entry to log file if logging enabled
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                        if [ $logStatus == "yes" ]
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			if [ $logStatus == "yes" ]
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                        then
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			then
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                                echo `date +%F` `date +%T` "$i" "Host up" >> $logPath/$logName
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				echo `date +%F` `date +%T` "$i" "Host up" >> $logPath/$logName
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                        else
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			else
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                                # if logging set to no send to null
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				# if logging set to no send to null
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                                echo "" > /dev/null
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				echo "" > /dev/null
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                        fi
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			fi
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                else
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		else
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                        # Collect all sites that do not respond as they should for further processing.
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			# Collect all sites that do not respond as they should for further processing.
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                        siteArray[ $is ]="${i}"
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			siteArray[ $is ]="${i}"
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                        (( is++ ))
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			(( is++ ))
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                fi
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		fi
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        done
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	done
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    # Check to see if any sites been reported as down.
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    # Check to see if any sites been reported as down.
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        if [ ${#siteArray[@]} -ne 0 ]
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	if [ ${#siteArray[@]} -ne 0 ]
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        then
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	then
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                # Test each failed site in a given amount of times.
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		# Test each failed site in a given amount of times.
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                for ((n=1;n<=$rInterval;n++))
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		for ((n=1;n<=$rInterval;n++))
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                do
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		do
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                        # Go through failed sites again to eliminate temporary glicthes.
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			# Go through failed sites again to eliminate temporary glicthes.
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                        for i in "${siteArray[@]}"
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			for i in "${siteArray[@]}"
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                        do
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			do
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                                CURL=$(curl -s --head $i)
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				CURL=$(curl -s --head $i)
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                                if echo $CURL | grep "200 OK" > /dev/null
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				if echo $CURL | grep "200 OK" > /dev/null
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                                then
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				then
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                                        # remove succesful sites from array.
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					# remove succesful sites from array.
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                                        delete=(${i})
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					delete=(${i})
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                                        siteArray=( "${siteArray[@]/$delete}" )
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					siteArray=( "${siteArray[@]/$delete}" )
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                                else
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				else
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                                        # Keeps failed site in array.
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					# Keeps failed site in array.
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                                        echo "" > /dev/null
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					echo "" > /dev/null
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                                fi
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				fi
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                        done
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			done
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                        # Clean empty lines in siteArray
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			# Clean empty lines in siteArray
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                        tmpArray=()
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			tmpArray=()
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                        for value in "${siteArray[@]}"
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			for value in "${siteArray[@]}"
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                        do
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			do
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                                [[ $value != "" ]] && tmpArray+=($value)
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				[[ $value != "" ]] && tmpArray+=($value)
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                        done
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			done
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                        siteArray=("${tmpArray[@]}")
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			siteArray=("${tmpArray[@]}")
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                        unset tmpArray
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			unset tmpArray
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                        # Debug
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			# Debug
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                        #for i in "${siteArray[@]}"
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			#for i in "${siteArray[@]}"
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                        #do
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			#do
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                        #       echo ${i}
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			#	echo ${i}
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                        #done
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			#done
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                        # Sleeps for an amount of time between checking site status again.
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			# Sleeps for an amount of time between checking site status again.
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                        sleep $rTime
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			sleep $rTime
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                done
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		done
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        fi
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	fi
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        # notification action
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	# notification action
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        if [ ${#siteArray[@]} -ne 0 ]
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	if [ ${#siteArray[@]} -ne 0 ]
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        then
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	then
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        #echo ${#siteArray[@]}
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	#echo ${#siteArray[@]}
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                # Send an email with status
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		# Send an email with status
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                if [ $sendMail == "yes" ]
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		if [ $sendMail == "yes" ]
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                then
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		then
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                        # Temp path for mailbody.txt
119
			# Temp path for mailbody.txt
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                        tmpPath=/tmp
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			tmpPath=/tmp
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121
 
121
                        # Set mail subject
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			# Set mail subject
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                        mailSubject="Connectivity test failed"
123
			mailSubject="Connectivity test failed"
123
 
124
 
124
                        # Build mail body
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			# Build mail body
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                        echo "Hi" > $tmpPath/mailbody.txt
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			echo "Hi" > $tmpPath/mailbody.txt
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                        echo "" >> $tmpPath/mailbody.txt
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			echo "" >> $tmpPath/mailbody.txt
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                        echo "One or more servers is not responding as the should, see complete list below." >> $tmpPath/mailbody.txt
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			echo "One or more servers is not responding as the should, see complete list below." >> $tmpPath/mailbody.txt
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                        echo "" >> $tmpPath/mailbody.txt
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			echo "" >> $tmpPath/mailbody.txt
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                        for i in "${siteArray[@]}"
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			for i in "${siteArray[@]}"
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                        do
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			do
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                                echo ${i} >> $tmpPath/mailbody.txt
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				echo ${i} >> $tmpPath/mailbody.txt
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                        done
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			done
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                        #echo "Test - Array size:" ${#siteArray[@]} >> $tmpPath/mailbody.txt
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			#echo "Test - Array size:" ${#siteArray[@]} >> $tmpPath/mailbody.txt
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                        echo "" >> $tmpPath/mailbody.txt
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			echo "" >> $tmpPath/mailbody.txt
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                        echo "Sent:" `date +%Y-%m-%d` `date +%H:%M` >> $tmpPath/mailbody.txt
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			echo "Sent:" `date +%Y-%m-%d` `date +%H:%M` >> $tmpPath/mailbody.txt
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                        echo "" >> $tmpPath/mailbody.txt
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			echo "" >> $tmpPath/mailbody.txt
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                        echo "Regards" >> $tmpPath/mailbody.txt
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			echo "Regards" >> $tmpPath/mailbody.txt
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                        echo "" >> $tmpPath/mailbody.txt
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			echo "" >> $tmpPath/mailbody.txt
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                        echo "Your $(cat /etc/hostname) server." >> $tmpPath/mailbody.txt
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			echo "Your $(cat /etc/hostname) server." >> $tmpPath/mailbody.txt
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                        # Send data
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			# Send data
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                        MAILRC=/dev/null mailx -n
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			MAILRC=/dev/null $mailBin -n
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                        if [ $smtpAuth = "no" ]
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			if [ $smtpAuth = "no" ]
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                        then
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			then
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                                env MAILRC=/dev/null from=$mailFrom smtp=$smtpHost:$smtpPort mailx -v -n -s "$mailSubject" $mailTo  <$tmpPath/mailbody.txt
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				env MAILRC=/dev/null from=$mailFrom smtp=$smtpHost:$smtpPort $mailBin -v -n -s "$mailSubject" $mailTo  <$tmpPath/mailbody.txt
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                        fi
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			fi
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                        if [ $smtpAuth = "yes" ]
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			if [ $smtpAuth = "yes" ]
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                        then
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			then
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                                env MAILRC=/dev/null from=$mailFrom smtp=$smtpHost:$smtpPort smtp-auth-user=$smtpUser smtp-auth-password=$smtpPass smtp-use-starttls=yes ssl-verify=ignore smtp-auth=login mailx -n -s "$mailSubject" $mailTo <$tmpPath/mailbody.txt
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				env MAILRC=/dev/null from=$mailFrom smtp=$smtpHost:$smtpPort smtp-auth-user=$smtpUser smtp-auth-password=$smtpPass smtp-use-starttls=yes ssl-verify=ignore smtp-auth=login $mailBin -n -s "$mailSubject" $mailTo <$tmpPath/mailbody.txt
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                        fi
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			fi
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152
                        # Remove temporary mailbody.txt file
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			# Remove temporary mailbody.txt file
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                        rm $tmpPath/mailbody.txt
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			rm $tmpPath/mailbody.txt
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                else
155
		else
155
                        echo "" > /dev/null
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			echo "" > /dev/null
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                fi
157
		fi
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158
                # add entry to log file if logging enabled
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		# add entry to log file if logging enabled
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                if [ $logStatus == "yes" ]
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		if [ $logStatus == "yes" ]
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                then
161
		then
161
                        for i in "${siteArray[@]}"
162
			for i in "${siteArray[@]}"
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                        do
163
			do
163
                                echo `date +%F` `date +%T` ${i} "Host down" >> $logPath/$logName
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				echo `date +%F` `date +%T` ${i} "Host down" >> $logPath/$logName
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164
                        done
165
			done
165
                fi
166
		fi
166
        fi
167
	fi
167
}
168
}
168
 
169
 
169
mail_test() {
170
mail_test() {
170
        # Temp path for mailbody.txt
171
	# Temp path for mailbody.txt
171
        tmpPath=/tmp
172
	tmpPath=/tmp
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173
 
173
        # Set mail subject
174
	# Set mail subject
174
        mailSubject="Mail test"
175
	mailSubject="Mail test"
175
 
176
 
176
        # Build mail body
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	# Build mail body
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        echo "Hi" > $tmpPath/mailbody.txt
178
	echo "Hi" > $tmpPath/mailbody.txt
178
        echo "" >> $tmpPath/mailbody.txt
179
	echo "" >> $tmpPath/mailbody.txt
179
        echo "This is a test mail to see that the mail function works." >> $tmpPath/mailbody.txt
180
	echo "This is a test mail to see that the mail function works." >> $tmpPath/mailbody.txt
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        echo "" >> $tmpPath/mailbody.txt
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	echo "" >> $tmpPath/mailbody.txt
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        echo "Sent:" `date +%Y-%m-%d` `date +%H:%M` >> $tmpPath/mailbody.txt
182
	echo "Sent:" `date +%Y-%m-%d` `date +%H:%M` >> $tmpPath/mailbody.txt
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        echo "" >> $tmpPath/mailbody.txt
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	echo "" >> $tmpPath/mailbody.txt
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        echo "Regards" >> $tmpPath/mailbody.txt
184
	echo "Regards" >> $tmpPath/mailbody.txt
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        echo "" >> $tmpPath/mailbody.txt
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	echo "" >> $tmpPath/mailbody.txt
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        echo "Your $(cat /etc/hostname) server." >> $tmpPath/mailbody.txt
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	echo "Your $(cat /etc/hostname) server." >> $tmpPath/mailbody.txt
186
 
187
 
-
 
188
	# Send data
-
 
189
	MAILRC=/dev/null $mailBin -n
-
 
190
	if [ $smtpAuth = "no" ]
-
 
191
	then
-
 
192
		env MAILRC=/dev/null from=$mailFrom smtp=$smtpHost:$smtpPort $mailBin -v -n -s "$mailSubject" $mailTo  <$tmpPath/mailbody.txt
-
 
193
	fi
-
 
194
	if [ $smtpAuth = "yes" ]
-
 
195
	then
187
        # Send data
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		env MAILRC=/dev/null from=$mailFrom smtp=$smtpHost:$smtpPort smtp-auth-user=$smtpUser smtp-auth-password=$smtpPass smtp-use-starttls=yes ssl-verify=ignore smtp-auth=login $mailBin -n -s "$mailSubject" $mailTo <$tmpPath/mailbody.txt
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188
        MAILRC=/dev/null mailx -n
197
	fi
189
        if [ $smtpAuth = "no" ]
198
 
190
        then
199
	# Remove temporary mailbody.txt file
191
                env MAILRC=/dev/null from=$mailFrom smtp=$smtpHost:$smtpPort mailx -v -n -s "$mailSubject" $mailTo  <$tmpPath/mailbody.txt
200
	rm $tmpPath/mailbody.txt
192
        fi
201
}
193
        if [ $smtpAuth = "yes" ]
202
 
194
        then
203
script_help() {
195
                env MAILRC=/dev/null from=$mailFrom smtp=$smtpHost:$smtpPort smtp-auth-user=$smtpUser smtp-auth-password=$smtpPass smtp-use-starttls=yes ssl-verify=ignore smtp-auth=login mailx -n -s "$mailSubject" $mailTo <$tmpPath/mailbody.txt
-
 
196
        fi
-
 
197
 
-
 
198
        # Remove temporary mailbody.txt file
-
 
199
        rm $tmpPath/mailbody.txt
204
	echo "Usage: oSiteChecker.sh <parameter>"
-
 
205
	echo ""
-
 
206
	echo "Parameters:"
-
 
207
	echo "--check      Does a test connection to pre-configured sites and test to see if they are responding."
-
 
208
	echo "--mail-test  Does a test on the mail function to see if all mail related settings are okay."