In hdaudioctl.8, the show command should have 2 arguments: codecid, nid
$ sudo hdaudioctl show
usage: hdaudioctl [-f dev] list
hdaudioctl [-f dev] show <codecid> <nid>
hdaudioctl [-f dev] get <codecid> <nid>
hdaudioctl [-f dev] set <codecid> <nid> [plist]
hdaudioctl [-f dev] graph <codecid> <nid>
$
-RVP
