#!/bin/sh
_timeout=5
_url="https://www.rygel.us/etc/keys/personal"
cache="/etc/ssh/keys"

_temp="$(mktemp)"

if curl \
	--connect-timeout $_timeout \
	"$_url" > "$_temp" 2>/dev/null
then
	cat "$_temp" | tee $cache
else
	cat $cache
fi

rm "$_temp"