#hostname — Public Fediverse posts
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CW: #Pfalz
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If you need to find the fully-qualified domain name (FQDN) of your server in Linux (e.g., you want to know whether to accept or deny an ACME challenge for Let’s Encrypt TLS certificates.):
* hostname --fqdn # OR
* cat /etc/hostnameAnd to get the IP:
* hostname --ip-address
Source: https://serverfault.com/questions/490825/how-to-set-the-domain-name-on-gnu-linux