svn commit: r314924 - head/sbin/devfs

[Ngie Cooper]

Author: ngie
Date: Wed Mar  8 23:58:10 2017
New Revision: 314924
URL: https://svnweb.freebsd.org/changeset/base/314924

Log:
  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

Modified:
  head/sbin/devfs/devfs.c

Modified: head/sbin/devfs/devfs.c
==============================================================================
--- head/sbin/devfs/devfs.c	Wed Mar  8 22:49:22 2017	(r314923)
+++ head/sbin/devfs/devfs.c	Wed Mar  8 23:58:10 2017	(r314924)
@@ -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);
 }