#!/bin/sh

set -eu
umask 077

certbot certificates 2> /dev/null | awk '
    {
        if (/^  Certificate Name: /) { cert = $3 }
        if (/^    Expiry Date: /) {
            days = $6
	    if (days < 30) {
                print cert " " days " days"
            }
        }
    }
    '