This is a hook for the Let's Encrypt ACME client dehydrated (previously known as letsencrypt.sh) that allows you to use DuckDNS Specs DNS records to respond to dns-01 challenges. Requires bash and your DuckDNS account token being in the environment.
$ cd ~
$ git clone https://github.com/lukas2511/dehydrated
$ cd dehydrated
$ mkdir hooks
$ git clone https://github.com/walcony/letsencrypt-DuckDNS-hook.git hooks/duckdns
Your DuckDNS token is expected to be in the environment. If you do not have a token yet, go to DuckDNS specs to learn more and to obtain it. If the token is not in the enviornment yet, set it up by the following commands in bash:
$ export DUCKDNS_TOKEN='example-token'
$ ./dehydrated -c -d example.com -t dns-01 -k 'hooks/duckdns/hook.sh'