Update my lets encrypt certificate.

update-letsencrypt.sh

#! /bin/bash

set -eu

DATE="$(date +"%Y-%m-%d")"
HOST=negativecurvature.net
CERT="$HOST.$DATE.crt"
COMBINED="$HOST.$DATE.combined.crt"
WITHKEY="$HOST.$DATE.withkey.crt"

test -f "$CERT" || python /root/acme-tiny/acme_tiny.py \
	--account-key ./account.key \
	--csr ./$HOST.csr \
	--acme-dir /srv/www/$HOST/public_html/.well-known/acme-challenge/ \
	> "$CERT"

touch "$WITHKEY"
chmod o-r "$WITHKEY"
cat "$CERT" chain.pem > "$COMBINED"
cat "$COMBINED" "$HOST.key" > "$WITHKEY"
chown root:ssl "$CERT"
chown root:ssl "$COMBINED"
chown root:ssl "$WITHKEY"
ln -sf "$(pwd)/$CERT" "../$HOST.crt"
ln -sf "$(pwd)/$COMBINED" "../$HOST.combined.crt"
ln -sf "$(pwd)/$WITHKEY" "../$HOST.withkey.crt"