#!/bin/sh

get_cert() {
	SERVER=${1:-my.server.com}
	PORT=${2:-993}
	CERT_FOLDER=${3:-~/.cert}

	openssl s_client -connect ${SERVER}:${PORT} -showcerts 2>&1 < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p'| sed -ne '1,/-END CERTIFICATE-/p' > ${CERT_FOLDER}/${SERVER}.pem
}

get_cert mail.cock.li