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.TH "UNBOUND-CHECKCONF" "8" "May 20, 2026" "1.25.1" "Unbound"
.SH NAME
unbound-checkconf \- Check Unbound 1.25.1 configuration file for errors.
.SH SYNOPSIS
.sp
\fBunbound\-checkconf\fP [\fB\-hf\fP] [\fB\-o option\fP] [cfgfile]
.SH DESCRIPTION
.sp
\fBunbound\-checkconf\fP checks the configuration file for the
\fI\%unbound(8)\fP DNS resolver for syntax and other errors.
The config file syntax is described in
\fI\%unbound.conf(5)\fP\&.
.sp
The available options are:
.INDENT 0.0
.TP
.B \-h
Show the version and commandline option help.
.UNINDENT
.INDENT 0.0
.TP
.B \-f
Print full pathname, with chroot applied to it.
Use with the \fI\%\-o\fP option.
.UNINDENT
.INDENT 0.0
.TP
.B \-q
Make the operation quiet, suppress output on success.
.UNINDENT
.INDENT 0.0
.TP
.B \-o <option>
If given, after checking the config file the value of this option is
printed to stdout.
For \fB\(dq\(dq\fP (disabled) options an empty line is printed.
.UNINDENT
.INDENT 0.0
.TP
.B cfgfile
The config file to read with settings for Unbound.
It is checked.
If omitted, the config file at the default location is checked.
.UNINDENT
.SH EXIT CODE
.sp
The \fBunbound\-checkconf\fP program exits with status code 1 on error, 0 for a
correct config file.
.SH FILES
.INDENT 0.0
.TP
.B @ub_conf_file@
Unbound configuration file.
.UNINDENT
.SH SEE ALSO
.sp
\fI\%unbound.conf(5)\fP,
\fI\%unbound(8)\fP\&.
.SH AUTHOR
Unbound developers are mentioned in the CREDITS file in the distribution.
.SH COPYRIGHT
1999-2026, NLnet Labs
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