Ubuntu/Scripts/SSL Expire

#!/bin/bash

https_port=('443')
smtp_port=('25')
imap_port=('993')

declare -a webservers=(
web.server.com
)

declare -a smtpservers=(
smtp.server.com
)

declare -a imapservers=(
imap.server.com
)

function websrv {
        for i in "${webservers[@]}"
        do
                web="$(openssl s_client -showcerts -connect $i:$https_port < /dev/null 2>/dev/null | openssl x509 -text)"
                echo "$web" | grep "CN\=[A-Za-z]*\.[A-Za-z]*\.[A-Za-z]*" | sed 's/.*CN=//'
                echo "$web" | grep "Validity" -A 2 | sed '/Validity/d' | sed 's/^[ \t]*//'
        done
}

function smtpsrv {
        for i in "${smtpservers[@]}"
        do
                smtp="$(openssl s_client -showcerts -starttls smtp -connect $i:$smtp_port < /dev/null 2>/dev/null | openssl x509 -text)"
                echo "$smtp" | grep "CN\=[A-Za-z]*\.[A-Za-z]*\.[A-Za-z]*" | sed 's/.*CN=//'
                echo "$smtp" | grep "Validity" -A 2 | sed '/Validity/d' | sed 's/^[ \t]*//'
        done
}

function imapsrv {
        for i in "${imapservers[@]}"
        do
                imap="$(openssl s_client -showcerts -connect $i:$imap_port < /dev/null 2>/dev/null | openssl x509 -text)"
                echo "$imap" | grep "CN\=[A-Za-z]*\.[A-Za-z]*\.[A-Za-z]*" | sed 's/.*CN=//'
                echo "$imap" | grep "Validity" -A 2 | sed '/Validity/d' | sed 's/^[ \t]*//'
        done
}

printf 'Web Severs\n'
websrv
printf '\n'
printf 'SMTP Servers\n'
smtpsrv
printf '\n'
printf 'IMAP Servers\n'
imapsrv