/usr/bin/riostream

/usr/bin/riostream: invalid option -- '-'
usage: /usr/bin/riostream
	[-s server_address]
	[-b bind_address]
	[-f address_format]
	    name, ip, ipv6, or gid
	[-B buffer_size]
	[-i inline_size]
	[-I iterations]
	[-C transfer_count]
	[-S transfer_size or all]
	[-p port_number]
	[-T test_option]
	    a|async - asynchronous operation (use poll)
	    b|blocking - use blocking calls
	    n|nonblocking - use nonblocking calls
	    v|verify - verify data