* lib/un.rb (wait_writable): added help message.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Fri Jun 27 11:06:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/un.rb (wait_writable): added help message.
+
 Fri Jun 27 06:52:54 2008  Koichi Sasada  <ko1@atdot.net>
 
 	* configure.in: need a ",".

lib/un.rb

@@ -19,6 +19,7 @@
 #   ruby -run -e install -- [OPTION] SOURCE DEST
 #   ruby -run -e chmod -- [OPTION] OCTAL-MODE FILE
 #   ruby -run -e touch -- [OPTION] FILE
+#   ruby -run -e wait_writable -- [OPTION] FILE
 #   ruby -run -e help [COMMAND]
 
 require "fileutils"
@@ -218,6 +219,10 @@ end
 #
 #   ruby -run -e wait_writable -- [OPTION] FILE
 #
+#   -n RETRY	count to retry
+#   -w SEC	each wait time in seconds
+#   -v		verbose
+#
 
 def wait_writable
   setup("n:w:v") do |argv, options|