DD-WRT letsencrypt renewal script.

ssl_renew

#!/bin/sh
export PATH=/opt/bin:/opt/sbin:$PATH
mount -o remount,rw /opt
rm -f /tmp/root/acme.log
/opt/etc/init.d/S80nginx stop
acme.sh --renew --ca-path /opt/etc/ssl/certs --cert-home /opt/etc/ssl --home /opt/root/.acme --log /tmp/root/acme.log -d '*.DOMAIN.NET' --dns dns_aws --ecc
acme.sh --install-cert --ca-path /opt/etc/ssl/certs --cert-home /opt/etc/ssl --home /opt/root/.acme --log /tmp/root/acme.log -d '*.DOMAIN.NET' --ecc \
        --cert-file '/opt/etc/ssl/pem/*.DOMAIN.NET/cert.pem' \
        --key-file '/opt/etc/ssl/pem/*.DOMAIN.NET/key.pem' \
        --fullchain-file '/opt/etc/ssl/pem/*.DOMAIN.NET/fullchain.pem'
mount -o remount,ro /opt
/opt/etc/init.d/S80nginx start
BODY=$(cat /tmp/root/acme.log)
echo -e "Subject: [dd-wrt] SSL Key Renewal Output\nContent-Type: text/plain; charset=utf-8\nMime-Version: 1.0\n\n$BODY\n\n" | msmtp -C /opt/etc/msmtprc USER@gmail.com
exit 0;