/usr/bin/unbound: invalid option -- '-'
usage:  unbound [options]
	start unbound daemon DNS resolver.
-h	this help.
-c file	config file to read instead of /etc/unbound/unbound.conf
	file format is described in unbound.conf(5).
-d	do not fork into the background.
-p	do not create a pidfile.
-v	verbose (more times to increase verbosity).
-V	show version number and build options.

Version 1.26.2
BSD licensed, see LICENSE in source package for details.
Report bugs to unbound-bugs@nlnetlabs.nl or https://github.com/NLnetLabs/unbound/issues