Checks given domains (as arguments) for certificate expiration.

check_ssl.sh

#!/usr/bin/env bash

domains=("$@")

for i in ${!domains[@]}; do
  echo ${domains[$i]}
  echo "" | openssl s_client -connect ${domains[$i]}:443 -servername ${domains[$i]} 2>/dev/null | openssl x509 -noout -enddate | sed -e 's/^notAfter\=//'
  echo ""
done