Provided by: unbound_1.4.22-1ubuntu4.14.04.3_amd64 

NAME
unbound - Unbound DNS validating resolver 1.4.22.
SYNOPSIS
unbound [-h] [-d] [-v] [-c cfgfile]
DESCRIPTION
Unbound is an implementation of a DNS resolver, that does caching and DNSSEC validation.
The available options are:
-h Show the version and commandline option help.
-c cfgfile
Set the config file with settings for unbound to read instead of reading the file at the default
location, /etc/unbound/unbound.conf. The syntax is described in unbound.conf(5).
-d Debug flag, do not fork into the background, but stay attached to the console. This flag will also
delay writing to the logfile until the thread-spawn time. So that most config and setup errors
appear on stderr.
-v Increase verbosity. If given multiple times, more information is logged. This is in addition to
the verbosity (if any) from the config file.
SEE ALSO
unbound.conf(5), unbound-checkconf(8).
AUTHORS
Unbound developers are mentioned in the CREDITS file in the distribution.
NLnet Labs Mar 12, 2014 unbound(8)