- Fixed exception when passing unknown command line option

git-svn-id: https://fail2ban.svn.sourceforge.net/svnroot/fail2ban/trunk@472 a942ae1a-1317-0410-a47c-b1dcaea8d605

fail2ban-server

@@ -71,7 +71,8 @@ class Fail2banServer:
 		print "and bans the corresponding IP addresses using firewall rules."
 		print
 		print "Only use this command for debugging purpose. Start the server with"
-		print "fail2ban-client instead."
+		print "fail2ban-client instead. The default behaviour is to start the server"
+		print "in background."
 		print
 		print "Options:"
 		print "    -b                   start in background"
@@ -113,6 +114,7 @@ class Fail2banServer:
 			optList, args = getopt.getopt(self.__argv[1:], cmdOpts, cmdLongOpts)
 		except getopt.GetoptError:
 			self.dispUsage()
+			sys.exit(-1)
 			
 		self.__getCmdLineOptions(optList)