Getting hostname from FQDN as variable in config file

[sebb <sebbaz@xxxxxxxxx>]

Is it possible the access the hostname part of a FQDN in a config file?

For example, suppose the config has the following condition:

<If "-d '/var/test/%{HTTP_HOST}'">

This might resolve to a directory such as:

/var/test/NAME.example.com

Is there a way to resolve just the initial part of the host, i.e. NAME?

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