check uptime of sites

check_sites

#!/bin/bash

SITESFILE=sites.txt #list the sites you want to monitor in this file
#EMAILS="[email protected],[email protected]" #list of email addresses to receive alerts (comma separated)

while read site; do
    if [ ! -z "${site}" ]; then
        
        CURL=$(curl -s --head $site)
        
        if echo $CURL | grep "200 OK" > /dev/null
        then
            echo "The HTTP server on ${site} is up!"
        else    

            MESSAGE="This is an alert that your site ${site} has failed to respond 200 OK."
            echo "${MESSAGE}"
#            for EMAIL in $(echo $EMAILS | tr "," " "); do
#                SUBJECT="$site (http) Failed"
#                echo "$MESSAGE" | mail -s "$SUBJECT" $EMAIL
#                echo $SUBJECT
#                echo "Alert sent to $EMAIL"
#            done      
        fi
    fi
done < $SITESFILE