print server certificate (for expiration check and stuff)

curl-server-cert.sh

#!/usr/bin/env bash

set -ue

if [[ $# -eq 0 ]]; then
  echo "USAGE: $0 HOST+"
  echo "  prints expiration date of https certs with curl"
  exit 1
fi

for i in "$@"; do
  echo "----------------- https://$i START"
  curl -v --silent -I "https://$i/.well_known/whatever.txt" 2>&1 | sed -n '/^* Server certificate/,/> Host/p'
  echo "----------------- https://$i END"
  echo
done