unbound-checkconf - Check Unbound configuration file for errors.
unbound-checkconf [-h] [-f] [-o option]
  [cfgfile]
Unbound-checkconf checks the configuration file for the unbound(8)
  DNS resolver for syntax and other errors. The config file syntax is described
  in unbound.conf(5).
The available options are:
  - -h
- Show the version and commandline option help.
- -f
- Print full pathname, with chroot applied to it. Use with the -o
    option.
- -o option
- If given, after checking the config file the value of this option is
      printed to stdout. For "" (disabled) options an empty line is
      printed.
- cfgfile
- The config file to read with settings for Unbound. It is checked. If
      omitted, the config file at the default location is checked.
The unbound-checkconf program exits with status code 1 on error, 0 for a correct
  config file.
  - /etc/unbound/unbound.conf
- Unbound configuration file.
unbound.conf(5), unbound(8).