A pure Unix shell script implementing ACME client protocol * An ACME protocol client written purely in Shell (Unix shell) language. * Full ACME protocol implementation. * Support ACME v1 and ACME v2 * Support ACME v2 wildcard certs * Simple, powerful and very easy to use. You only need 3 minutes to learn it. * Bash, dash and sh compatible. * Simplest shell script for Let's Encrypt free certificate client. * Purely written in Shell with no dependencies on python or the official Let's Encrypt client. * Just one script to issue, renew and install your certificates automatically. * DOES NOT require root/sudoer access. * Docker friendly * IPv6 support