What is the purpose of the < (less than symbol) before path in dovecot settings
In the default dovecot ssl config file the certificate file paths are specified like:
ssl_cert = </etc/dovecot/private/dovecot.pem
What is the purpose of that < symbol preceding the path?
UPDATE: A comment below contained a dead link to docs detailing this syntax. Here is the current working link which may be helpful to future readers: https://doc.dovecot.org/configuration_manual/config_file/#reading-value-from-file
It’s to make it read the contents of the file rather than using the literal string “/etc/dovecot/private/dovecot.pem” as the certificate.