delete expired lets encrypt certificates

delete_expired_certs.sh

unix_todate=$(date -d "${todate}" "+%s")
getDomainName() {
	echo $1 | cut -d'/' -f 5 
}
for pem in /etc/letsencrypt/live/*/cert.pem; do 
	if [ $(date --date="$(openssl x509 -enddate -noout -in "$pem"|cut -d= -f 2)" "+%s") -le $unix_todate ];
	then
	  domain=$(getDomainName $pem)
    printf 'deleting cert %s expired: %s\n' \
      "$domain" \
      "$(date --date="$(openssl x509 -enddate -noout -in "$pem"|cut -d= -f 2)" --iso-8601)"
    certbot delete --cert-name $domain
  fi
done | sort