From c3e412c083332764a680da896e5d291821cc98bc Mon Sep 17 00:00:00 2001
From: Enji Cooper <ngie@FreeBSD.org>
Date: Wed, 8 Mar 2017 23:58:10 +0000
Subject: [PATCH] sbin/devfs: clarify usage

- Note existence of -m option.
- Note that -s applies to rule keyword, only, by adding usage text
  specifically for the `rule` and `ruleset` keywords.

Don't go into any further detail in usage(..) -- it's best that one
reads the manpage to get a better idea of how things work as there are
a number of different option-specific keywords and arguments, as well
as some rule grammar.

MFC after:	1 week
Sponsored by:	Dell EMC Isilon
---
 sbin/devfs/devfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sbin/devfs/devfs.c b/sbin/devfs/devfs.c
index 0e7b6621012..bd6fea911ff 100644
--- a/sbin/devfs/devfs.c
+++ b/sbin/devfs/devfs.c
@@ -225,6 +225,8 @@ void
 usage(void)
 {
 
-	fprintf(stderr, "usage: devfs rule|ruleset arguments\n");
+	fprintf(stderr, "usage: %s\n%s\n",
+	    "\tdevfs [-m mount-point] [-s ruleset] rule ...",
+	    "\tdevfs [-m mount-point] ruleset ...");
 	exit(1);
 }