Download and display SSL certificate validity dates issuer and subject

check-certificate.sh

#!/bin/bash -vx

# check-certificate.sh
# Download and display SSL certificate validity dates issuer and subject
# Andres Hernandez - tonejito

PRINTF=printf
OPENSSL=openssl

if [ -n "${1}" ]
then
  HOST=${1}
else
  HOST=localhost
fi


if [ -n "${2}" ]
then
  PORT=${2}
else
  PORT=443
fi

$PRINTF "" | \
$OPENSSL s_client -showcerts -connect $HOST:$PORT | \
$OPENSSL x509 -noout -issuer -subject -dates