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

  • Cron job notifications for renewal or error etc.

  • It's probably the easiest & smartest shell script to automatically issue & renew the free certificates from Let's Encrypt.


    BE AWARE that this version do not include all it's features, such as

  • notify

  • crontabs (instead it uses a daemon)

  • running commands outside of its own filesystem

    • but if you need to copy certificates, see the certs-plug

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