Easy command line SSL certificate fingerprinting

ssl_certificate_fingerprint.sh

#!#!/bin/bash
if [ $1 ]; then
  echo -e "GET / HTTP\1.1\n" | openssl s_client -connect $1:443 2> /dev/null | openssl x509 -noout -fingerprint | cut -f2 -d'=' | head -n 1 2> /dev/null
else
  echo "Usage: $0 <host>"
  echo "Generates an SSL fingerprint for a host. Useful in comparing certificate changes."
  echo
  echo "Examples:"
  echo "  $0 google.com"
  echo "  $0 amazon.com"
fi