#!/usr/bin/env sh

for host in $@; do
    openssl s_client -connect $host:443 < /dev/null | \
        openssl x509 -noout -text | \
        perl -ne 'if (/DNS/) {
                      s/^ +|DNS://g;
                      s/, /\n/g;
                      print; 
                  }'
done